Nano Banana How-To Guide for Chinese Users: Create Brand Images Step by Step

If you searched for a Chinese-language Nano Banana how-to query, you probably want a simple answer: how do you actually use Nano Banana to create or edit images without wasting credits, rewriting prompts endlessly, or getting generic results?

This guide walks through the practical workflow: choosing the right input, writing a usable prompt, generating the first image, editing it, and turning the result into a brand-ready asset for ads, product photos, social posts, or website visuals.

BrandGene supports Nano Banana-style image workflows through Nano Banana 2, the Image Agent, and specialized tools such as Text to Image Generator, AI Product Photography, and AI Background Generator. The key difference is that BrandGene adds brand context: colors, tone, product details, campaign goals, and platform formats.

Quick Answer: How to Use Nano Banana

Here is the shortest version:

1. Open Nano Banana 2 or BrandGene Image Agent.
2. Choose whether you want to create a new image or edit an existing image.
3. Describe the subject, style, lighting, background, and final use case.
4. Add brand context: colors, logo style, product name, audience, and platform.
5. Generate 2-4 variations instead of trying to make one perfect image.
6. Pick the best version, then edit with specific instructions.
7. Export the image in the right size for ads, social media, ecommerce, or website use.

The most common mistake is writing a prompt that is too short. "A product photo" is not enough. "A premium skincare serum bottle on a warm beige stone surface, soft studio lighting, clean ad composition, room for headline text, brand colors ivory and sage green" is much better.

What Chinese Users Usually Mean by "How to Use"

Chinese searches around Nano Banana often combine several needs in one query. A user may not only want the entry point. They may also want to know whether it is free, whether it supports Chinese prompts, whether it can edit photos, whether it can make product images, and whether there is a prompt format that works reliably.

For that reason, this guide treats "how to use" as a workflow question, not just a login question. The practical answer includes:

• Where to start: model page, Image Agent, or a specialized tool.
• What to prepare: product photo, brand colors, platform goal, and example style.
• How to write: subject, style, lighting, background, and use case.
• How to refine: keep what works, change one thing at a time.
• How to publish: export for the right platform and check quality before launch.

If you already know the basics, skip straight to the templates below. If you are creating business visuals, do not skip the brand consistency and quality check sections.

What Is Nano Banana?

Nano Banana is the nickname many users use for Google's Gemini image generation and editing models. People search for it because it became associated with fast AI image creation, strong image editing, and viral prompt examples.

For marketers and small businesses, the useful part is not the nickname. The useful part is the workflow:

• Text to image: describe an image and generate it.
• Image editing: upload a photo and ask for changes.
• Style transfer: turn an existing image into another visual style.
• Product scenes: place a product into a new environment.
• Ad creative: generate images with space for copy, CTA, or product focus.
• Prompt iteration: refine the result through natural language.

BrandGene wraps these workflows in a business-friendly layer. Instead of starting from a blank prompt every time, you can work from brand DNA, product information, and campaign goals.

Step 1: Decide What You Are Making

Before writing a prompt, decide the output type. Nano Banana can create many kinds of visuals, but each one needs different instructions.

If the output needs to sell something, include the business context. If it needs to look on-brand, include brand context. If it needs to fit a platform, include aspect ratio and layout.

Step 2: Use the Five-Part Prompt Formula

A good Nano Banana prompt usually has five parts:

Subject + Style + Lighting + Background + Use Case

For example:

A matte black coffee tumbler with a subtle silver logo, premium product photography style, soft diffused studio lighting, warm stone kitchen counter background, composition for an Instagram ad with clean space for headline text.

That prompt works because it tells the model:

• What to show: matte black coffee tumbler.
• How it should look: premium product photography.
• How it is lit: soft diffused studio lighting.
• Where it is: warm stone kitchen counter.
• Why it exists: Instagram ad with headline space.

For BrandGene, you can add another layer:

Use the brand colors ivory, charcoal, and muted gold. Keep the mood calm, premium, and modern. Avoid clutter.

That extra brand layer is often what separates generic AI images from usable marketing images.

Step 3: Generate Your First Image

Start with 2-4 variations. Do not expect the first output to be the final one. Treat the first generation as creative exploration.

Good first-generation prompt:

Create a square Instagram ad visual for a premium matcha powder brand. Show the product pouch standing upright on a light stone countertop with a ceramic whisk and a small bowl of matcha. Soft morning light from the left, clean minimal Japanese-inspired composition, muted green and cream color palette, space at the top for headline text, premium wellness mood.

Bad first-generation prompt:

matcha ad

The bad prompt may produce something interesting, but it gives you little control. The good prompt gives the AI a composition, palette, mood, business purpose, and layout.

Step 4: Edit With Specific Instructions

After the first image, do not rewrite everything. Edit with short, precise instructions.

Good edit instructions:

• "Make the background lighter and less busy."
• "Move the product slightly lower so there is more headline space."
• "Keep the same product, but change the surface to white marble."
• "Make the lighting warmer and more premium."
• "Create a 9:16 version for Instagram Stories."

Weak edit instructions:

• "Make it better."
• "More professional."
• "Fix it."

The AI needs direction. If you are unhappy with an image, name the part that is wrong: lighting, background, product angle, style, color, text space, realism, or platform format.

Step 5: Make It Brand-Consistent

This is where many Nano Banana workflows fall short. A single image can look good but still fail as a brand asset.

To make an image brand-consistent, specify:

• Brand colors.
• Typography mood, even if text is not rendered.
• Product price point.
• Target audience.
• Visual tone: playful, premium, technical, organic, bold, minimal.
• Platform: Amazon, Shopify, Instagram, Facebook, TikTok, blog header.

Example:

Keep the visual aligned with a premium skincare brand: ivory background, sage green accents, soft shadows, minimal props, calm wellness mood, no loud colors, no cartoon styling.

If you use BrandGene Image Agent, you can work conversationally: upload or define brand details once, then ask for new ad variations without repeating every brand rule.

Step 6: Choose the Right Format Before Exporting

Many beginners create one beautiful square image, then discover it does not fit the place where they need to publish it. Decide the format before you export.

Example export prompt:

Create a 4:5 vertical version for an Instagram feed ad. Keep the product in the lower center, leave clean space in the top third for a headline, and preserve the same lighting, color palette, and background.

For ecommerce, platform rules matter. Amazon-style main images often need clean white backgrounds. Shopify hero images can use lifestyle scenes. TikTok Shop and Instagram ads usually need more visual energy. The same product can need several image formats, so build a small set rather than a single final image.

Step 7: Build a Repeatable Workflow

The best Nano Banana users do not start from scratch every time. They build a repeatable workflow.

Use this simple production loop:

1. Create the base visual.
2. Pick the strongest direction.
3. Ask for 3-5 controlled variations.
4. Adjust layout for each platform.
5. Save the prompt structure.
6. Reuse the structure for the next product, campaign, or offer.

For example, a skincare brand could use one reusable structure:

Premium skincare product photography of [product], [surface], [props], soft diffused lighting, clean wellness mood, brand colors [colors], composition for [platform], space for [copy area].

Then swap only the variables:

• [product]: serum bottle, moisturizer jar, cleanser tube.
• [surface]: white marble, warm stone, pale wood.
• [props]: eucalyptus, water droplets, ceramic dish.
• [platform]: Shopify hero, Instagram ad, email header.
• [copy area]: top third, right side, bottom strip.

This is faster than inventing a new prompt every time, and it helps your images feel like one brand family.

Step 8: Use Reference Images When Accuracy Matters

Text prompts are enough for concept images. Reference images are better when you need accuracy.

Use a reference image when:

• The product shape must stay consistent.
• The label or packaging matters.
• A person, mascot, or prop must look similar across images.
• You want to preserve a color palette from an existing campaign.
• You are editing a real photo instead of creating a concept from scratch.

When using a reference, your edit prompt should separate what changes from what stays fixed:

Use the uploaded product photo as the source. Keep the product shape, label, color, and proportions unchanged. Replace the background with a bright modern bathroom counter, add soft morning light, and create a clean premium wellness composition for a Shopify product page.

This is much clearer than "make this look better." It gives the model boundaries. Boundaries are useful because they protect the product and brand identity while still allowing creative changes around it.

Step 9: Quality Check Before You Publish

Before using an AI-generated image in a campaign, check it like a designer would.

Use this checklist:

• Is the product accurate?
• Is the logo or label readable?
• Does the image match the brand colors?
• Is the lighting believable?
• Is there enough space for text?
• Does the subject fit the platform crop?
• Is the image too busy at mobile size?
• Are there strange hands, reflections, shadows, or warped objects?
• Does the visual communicate the offer or product benefit?

If the image fails one item, edit that specific issue. Do not restart unless the whole concept is wrong.

Example fix prompts:

Keep the same composition, but make the label sharper and easier to read.

Remove the extra props on the left side and make the background cleaner.

Keep the product unchanged, but make the light source more natural and reduce the harsh shadow.

Three Complete Workflow Examples

Example 1: Shopify Product Hero

Goal: a homepage hero for a premium coffee brand.

Prompt:

Premium product hero image for a specialty coffee brand. Show a matte black coffee bag standing upright on a warm walnut counter with a ceramic cup and subtle steam. Soft morning window light from the left, clean modern kitchen background, rich brown and cream palette, composition for a 16:9 Shopify hero banner with empty space on the right for headline text.

Edit:

Keep the coffee bag unchanged. Make the background slightly brighter, reduce the props, and leave more clean space on the right side for copy.

CTA target: AI Product Photography.

Example 2: Instagram Ad

Goal: a square image for a language learning app.

Prompt:

Instagram square ad visual for a language learning app. Show a young professional smiling while studying on a tablet in a bright cafe. Blue and warm yellow brand palette, modern friendly design, soft daylight, clear space at the top for headline text, optimistic and focused mood.

Edit:

Create three variations with the same layout: one more corporate, one more playful, and one more premium. Keep the blue and yellow palette consistent.

CTA target: AI Social Media Post Generator.

Example 3: Background Replacement

Goal: turn a plain product photo into a campaign-ready image.

Prompt:

Use the uploaded product image. Keep the product unchanged. Replace the plain background with a clean pastel gradient in ivory and sage green. Add soft studio shadows under the product, keep the scene minimal, and create space on the left for a short promotional headline.

Edit:

Make the gradient more subtle, add slightly stronger product shadow, and keep the product centered vertically.

CTA target: AI Background Generator.

Practical Prompt Templates

Product Photo Template

Professional product photography of [product], [material and color], [camera angle], [background or scene], [lighting], [brand mood], composition for [platform], with clean space for [headline/logo/CTA].

Example:

Professional product photography of a matte white collagen powder jar, three-quarter angle, standing on a pale stone surface with soft beige fabric in the background, diffused studio lighting, premium wellness mood, composition for a Shopify hero banner, clean space on the right for headline text.

Social Ad Template

Create a [platform] ad visual for [product/service]. Show [main subject] in [scene]. Use [brand colors]. The mood should be [tone]. Leave [text area] for copy. Make it [style].

Example:

Create an Instagram square ad visual for an online language learning app. Show a young professional studying on a tablet in a bright cafe. Use blue and warm yellow brand colors. The mood should be optimistic and focused. Leave clean text space at the top left. Make it modern, friendly, and polished.

Background Template

Generate a [style] background for [use case], using [colors], [texture], [lighting], with [amount of depth], leaving space for [subject/text].

Example:

Generate a minimalist gradient background for a product ad, using soft lavender and deep navy, subtle paper texture, gentle spotlight lighting, shallow depth, leaving the center clear for a skincare bottle.

Image Editing Template

Keep [what must remain unchanged]. Change [specific element] to [new element]. Adjust [lighting/color/composition]. Preserve [brand/product/person details]. Output for [platform].

Example:

Keep the product bottle unchanged. Change the background to a clean spa bathroom with warm natural light. Adjust the color palette to ivory and sage green. Preserve the label and bottle shape. Output for a 4:5 Instagram ad.

Common Mistakes

Mistake 1: Writing only the subject

If you write "a shoe," the AI must guess everything. Add style, angle, lighting, background, and use case.

Mistake 2: Asking for too many unrelated styles

"Minimal luxury cyberpunk watercolor cartoon product photo" gives mixed signals. Pick one dominant direction.

Mistake 3: Ignoring aspect ratio

A blog header, Instagram story, Amazon listing image, and YouTube thumbnail need different layouts. Mention the platform early.

Mistake 4: Forgetting text space

If the image will be used in an ad, ask for clean space for the headline or CTA. Otherwise the model may fill the whole image with visual detail.

Mistake 5: Not preserving the product

For product editing, always say what must remain unchanged: label, shape, logo, color, packaging, or proportions.

When to Use BrandGene Instead of a Blank Prompt Box

Use a blank Nano Banana prompt when you are experimenting casually.

Use BrandGene when you need:

• Brand consistency across many images.
• Product-aware image generation.
• Social ad variations.
• Marketplace-ready product photos.
• Campaign visuals in multiple formats.
• A conversational workflow for edits and refinements.

Try these BrandGene paths:

• Nano Banana 2 for the model overview and entry point.
• Image Agent for conversational image creation.
• AI Product Photography for ecommerce images.
• AI Background Generator for product and ad backgrounds.
• Prompts Library for reusable prompt examples.

FAQ

Is Nano Banana free?

Availability and pricing can vary by platform and model access. If you want a BrandGene workflow, start from Nano Banana 2 or check pricing for credit details.

Can Nano Banana edit existing photos?

Yes. Use image editing instructions such as "keep the product unchanged, replace the background, warm the lighting, and output for Instagram." The more specific the edit, the better the result.

Can I use Nano Banana for product photography?

Yes. It is especially useful for lifestyle scenes, background changes, ad variations, and concept exploration. For ecommerce workflows, AI Product Photography gives you a more product-focused path.

How long should my prompt be?

Most useful prompts are 40-90 words. Short prompts are fine for exploration, but marketing assets usually need more context.

Why does my image look generic?

The prompt probably lacks brand context, lighting, composition, or use case. Add platform, audience, color palette, subject details, and the final purpose of the image.

What should I do after generating the first image?

Pick the closest version and edit it. Ask for specific changes: lighter background, more headline space, warmer lighting, cleaner product angle, or a new aspect ratio.

Next Step

Start with a simple prompt in BrandGene Image Agent, then turn it into a reusable workflow. Once you find a structure that works for your brand, save the formula and use it across product photos, social ads, website banners, and campaign visuals.