Nano Banana Pro Prompting Guide
Master Professional AI Image Generation Using a Simple Framework
💡 Important tip: For best results, consider writing your prompts in English. AI models were primarily trained in English and tend to produce more accurate and consistent results in this language.
Table of Contents
You've tried using Nano Banana Pro (Google's Gemini 3 Pro Image). Sometimes it creates exactly what you imagined. Other times, it's completely off. The difference isn't luck—it's structure.
Most users treat AI image generation like a search engine: they type keywords and hope. Professional results require a different approach. This guide will teach you a simple, replicable framework that works every time.
The Core Shift: From Keywords to Scenes
The fundamental difference between amateur and professional results is how you think about prompts.
The Old Way: Keyword Gambling
woman, coffee shop, laptop, window, rainy day, cozy
The Problem: This is a list of disconnected ingredients. The AI has to guess how they relate, what mood you want, what should be in focus, what the lighting is like, and how everything is framed.
The Nano Banana Pro Way: Scene Description
A woman in her 30s sits alone at a corner table in a cozy coffee shop, working on her laptop while gazing out the rain-streaked window. Soft, gray daylight filters through the glass, creating a peaceful, contemplative atmosphere. The shot is framed as a medium shot from a slight side angle, with the woman in sharp focus and the background cafe softly blurred.
Why This Works: Nano Banana Pro was trained on descriptive text—novels, screenplays, photography blogs. It excels at understanding narrative scenes, not tag lists.
The 6-Element Framework for Perfect Prompts
Every professional Nano Banana Pro prompt contains six core elements. Miss one, and your results become unpredictable.
1. Subject: The Star of Your Scene
What it is: The main focus—a person, object, or character.
Weak: "a man"
Strong: "a man in his 50s with gray hair and wire-rimmed glasses, wearing a worn leather jacket"
The Rule: Be specific enough that two people would imagine nearly identical images.
2. Action: What's Happening
What it is: The verb. What your subject is doing.
Weak: "standing"
Strong: "leaning forward, carefully examining an old map spread across a wooden table"
The Rule: Use descriptive verbs that show both the action and the manner.
3. Location: The Environment
What it is: Where the scene takes place, including atmosphere and details.
Weak: "in a library"
Strong: "in a dimly lit library with floor-to-ceiling oak shelves, dust particles visible in shafts of afternoon light"
The Rule: Include materials, lighting, scale, and atmospheric details.
4. Composition: How It's Framed
What it is: Camera angle and framing type.
Main Shot Types:
- Wide shot: Full body plus environment
- Medium shot: From waist up
- Close-up: Face and shoulders
- Extreme close-up: A single detail
Example: "A low-angle medium shot looking slightly up at the subject"
5. Lighting: The Mood Creator
What it is: How the scene is lit and the atmosphere it creates.
Quick Reference:
- Golden hour: Warm, magical sunrise/sunset light
- Soft diffused: Gentle, flattering, minimal shadows
- Hard dramatic: Sharp shadows, high contrast
- Volumetric: Visible light beams through fog/dust
Example: "Illuminated by soft golden hour light from the left, creating warm tones and gentle shadows"
6. Style: The Aesthetic Coating
What it is: The overall visual language.
Common Styles:
- Photorealistic
- Cinematic
- Watercolor painting
- 3D render
- Vintage poster art
- Film noir
Example: "The style is photorealistic with a warm, earthy color palette and a calm, contemplative mood"
Building a Prompt: Step-by-Step Tutorial
Let's build a professional prompt from scratch using the 6-element framework.
Example Goal: E-Commerce Product Photo
Product: Wireless headphones
Step 1: Define Your Subject
Subject: A pair of wireless noise-canceling headphones in matte midnight blue with rose gold metal accents and soft leather earpads.
Step 2: Add Action or Context
Action: The headphones are positioned at a 45-degree angle, slightly opened, revealing the interior padding.
Step 3: Build the Environment
Location: On a clean white marble surface with subtle gray veining.
Step 4: Set the Composition
Composition: Shot from a 45-degree overhead angle with shallow depth of field, keeping the headphones sharp while the background softly blurs.
Step 5: Design the Lighting
Lighting: Soft, even studio lighting from above and left to prevent harsh reflections on the metal, with a subtle rim light creating edge definition.
Step 6: Specify the Style
Style: Modern, sophisticated product photography with a clean, premium aesthetic. 1:1 aspect ratio at 2K resolution for Instagram and e-commerce.
Final Assembled Prompt
A pair of wireless noise-canceling headphones in matte midnight blue with rose gold metal accents and soft leather earpads, positioned at a 45-degree angle and slightly opened to reveal the interior padding. The headphones rest on a clean white marble surface with subtle gray veining. Shot from a 45-degree overhead angle with shallow depth of field, keeping the headphones in sharp focus while the background softly blurs. Soft, even studio lighting from above and left prevents harsh reflections on the metal, with a subtle rim light creating edge definition. The style is modern, sophisticated product photography with a clean, premium aesthetic. 1:1 aspect ratio at 2K resolution.
Result: A production-ready e-commerce photo with a professional look.
Choosing Your Strategy: A Decision Guide
Different projects require different approaches. Use this framework to make the right choice.
When to Use Simple Prompts
Best For:
- Quick concept exploration
- Visual idea brainstorming
- Simple social media content
- Early-stage iteration
Approach: Focus on the 6 main elements in 2-3 sentences. Skip technical specifications.
A cozy reading nook with an armchair, floor lamp, and stacks of books by a large window with rain outside. Warm, inviting lighting with a peaceful atmosphere. Photorealistic style.
When to Use Detailed Prompts
Best For:
- Professional client work
- Production-ready marketing materials
- E-commerce product photography
- Brand identity assets
- Anything requiring precision and consistency
Approach: Include all 6 elements with technical specifications.
When to Use Multi-Image Input
Best For:
- Character consistency (up to 5 people)
- Brand application mockups
- Style transfer
- Complex compositions blending multiple elements
Approach: Provide reference images and clearly define each image's role.
Quick Resolution & Aspect Ratio Guide
| Use Case | Resolution | Aspect Ratio |
|---|---|---|
| Instagram feed, product photos | 2K | 1:1 |
| Instagram Stories, TikTok | 2K | 9:16 |
| Website banners, YouTube thumbnails | 2K | 16:9 |
| Pinterest, Facebook feed | 2K | 4:5 |
| Print, billboards, client deliveries | 4K | Based on use |
| Quick prototyping, concepts | 1K | Based on use |
Best Practices for Consistent Results
Follow these six rules to get professional results every time.
1. Write Scenes, Not Lists
Don't:
sunset, beach, woman, flowing dress, waves, orange sky
Do:
A woman in a flowing white dress walks along a deserted beach at sunset, warm orange light reflecting off gentle waves, creating a peaceful, romantic atmosphere.
2. Be Specific About Text
When you need text in your image (posters, labels, diagrams), always:
- Put the exact text in quotes
- Describe font style descriptively
- Specify placement
Create a motivational poster with the text "NEVER SETTLE" in bold, uppercase, white sans-serif typography centered at the top, against a dramatic mountain sunrise background.
3. Use the One-Change Rule
When refining images iteratively, change only ONE element at a time. This teaches you what works and isolates problems.
Iteration Sequence:
- Generate base image
- Keep everything same, adjust only lighting
- Keep lighting, adjust only composition
- Keep composition, adjust only background
4. Specify Lighting Direction
Never just say "good lighting". Specify source and quality.
Weak: "well-lit portrait"
Strong: "lit by soft window light from the left, creating gentle shadows and a natural, flattering glow"
5. Use Negative Space Intentionally
If you need space for text overlay, request it explicitly.
A minimalist composition with the subject in the bottom-right corner, leaving significant empty space in the top-left for text overlay.
6. Match Style to Purpose
| Purpose | Style to Use |
|---|---|
| E-commerce, products | Photorealistic, clean studio lighting |
| Social media, fun content | Vibrant, stylized illustration |
| Corporate, professional | Cinematic, polished, modern |
| Creative, artistic | Watercolor, 3D render, vintage poster |
| Editorial, storytelling | Cinematic, moody, film-like |
Conclusion: Your Replicable System
Nano Banana Pro is a precision tool that responds to precise inputs. The difference between inconsistent results and professional-grade assets is structure.
Your Framework
Every prompt needs these six elements:
- Subject – Who or what
- Action – Doing what
- Location – Where, with atmosphere
- Composition – How it's framed
- Lighting – Mood and illumination
- Style – Visual aesthetic
Your Workflow
- Simple prompts for exploration (2-3 sentences, only main elements)
- Detailed prompts for production (all 6 elements + technical specs)
- Multi-image input for consistency and complex compositions
- Iterative refinement changing one variable at a time
From User to Professional
This isn't about memorizing technical jargon. It's about thinking systematically. Once you internalize this framework, it becomes natural.
You stop guessing. You start engineering visual results.