Master Prompt Engineering

AI Image Prompt Guide

Learn the art and science of writing prompts that generate stunning AI images. From beginner basics to advanced techniques.

The Anatomy of a Perfect Prompt

Every effective prompt follows a clear structure

1

Subject

The main focus of your image—what you want to see

Examples: a cat, a futuristic city, a woman in a red dress

💡 Always start with the subject. Be specific about what it is.

2

Style

The artistic style or visual aesthetic

Examples: photorealistic, anime style, oil painting, 3D render

💡 Define the style early for consistent results.

3

Details

Specific characteristics, colors, and features

Examples: golden hour lighting, cinematic composition, vibrant colors

💡 Add 2-3 key details that enhance the main subject.

4

Technical

Resolution, format, and quality specifications

Examples: 8K resolution, 4K, high detail, sharp focus

💡 Include resolution for higher quality output.

Essential Style Keywords

Use these keywords to define your visual aesthetic

Photography Styles

Art & Illustration

3D & CGI

Design & Graphics

Real-World Prompt Examples

Study these examples to understand effective prompting

Portrait Photography

Professional Headshot

"Professional headshot of a confident business executive, natural lighting, shallow depth of field, modern office background, photorealistic, 8K"

Clear subject, professional context, technical specs

Artistic Portrait

"Elegant woman in flowing red dress, standing on a cliff overlooking the ocean at sunset, dramatic lighting, photorealistic, cinematic composition, 8K resolution"

Vivid details, emotional atmosphere, technical quality

Product Photography

Luxury Product

"Luxury perfume bottle with gold accents, placed on marble surface with rose petals scattered around, studio lighting, bokeh background, commercial product photography, 4K"

Specific product, setting details, commercial style

Tech Product

"Sleek smartphone floating against vibrant gradient background, studio lighting, product photography, clean composition, modern tech aesthetic"

Minimal composition, modern aesthetic, clear subject

Fantasy & Art

Fantasy Character

"Elven warrior with ornate silver armor and glowing sword, standing in ancient enchanted forest, cinematic lighting, fantasy art style, hyper-detailed, 8K"

Character details, environment context, style specified

Whimsical Scene

"Cozy cottagecore cottage with wildflowers and butterflies, soft watercolor style, dreamy atmosphere, pastel colors, hand-drawn illustration aesthetic"

Mood and atmosphere defined, artistic style clear

Anime & Manga

Anime Portrait

"Beautiful anime girl with long flowing pink hair, cherry blossom petals falling, vibrant colors, Studio Ghibli inspired, manga art style, detailed eyes"

Anime characteristics, reference to known style

Chibi Character

"Cute chibi fantasy knight, small proportions with big head, kawaii style, soft pastel colors, simple clean background, adorable expression"

Specific anime sub-style, proportions defined

Common Prompt Mistakes to Avoid

Vague Prompts

❌ Bad Example:

"a picture of a dog"

✅ Good Example:

"a golden retriever puppy sitting in a sunny park, grass field background, photorealistic, natural lighting"

💡 Specific details help the AI understand exactly what you want.

Too Many Keywords

❌ Bad Example:

"a cat dog bird fish tree mountain sun moon stars sky cloud rain snow beautiful amazing stunning incredible 8K 4K HD realistic unreal engine octane render watercolor oil painting digital art anime manga cartoon"

✅ Good Example:

"A majestic lion walking through the savanna at golden hour, photorealistic wildlife photography, cinematic lighting, 8K resolution"

💡 Focus on key elements rather than keyword stuffing. 15-30 well-chosen words work better than 100+ random keywords.

Contradictory Instructions

❌ Bad Example:

"a realistic photograph drawn as a cartoon anime style oil painting"

✅ Good Example:

"a portrait in anime style with vibrant colors and clean lines"

💡 Choose one clear style. Mixing contradictory styles confuses the AI.

Advanced Prompting Techniques

Aspect Ratio Control

Specify dimensions for your intended use

Lighting Keywords

Control mood and atmosphere with lighting terms

Camera Angles

Define perspective for dynamic compositions

Artist References

Reference known artists or styles for specific aesthetics

Prompt Writing FAQ

How long should my AI image prompts be?
Effective prompts typically range from 15-50 words. Start with the essentials: subject + style + key details. Add technical specifications like resolution if needed. More words don't always mean better results—focus on clarity and relevance over length.
What's the best prompt structure for beginners?
Use this simple formula: [Subject] + [Action/Position] + [Style] + [Setting] + [Lighting] + [Quality]. Example: 'A cat sitting on a windowsill, photorealistic style, cozy room interior, morning sunlight, 8K resolution'. This covers all the essential elements.
How can I get consistent results across multiple generations?
Keep your core prompt structure consistent and only change one element at a time. Use the same style keywords, lighting terms, and technical specs. If you find a prompt that works well, save it as a template and modify just the subject for variations.
Why do my prompts sometimes give unexpected results?
AI interprets prompts holistically, so word order and emphasis matter. If results are unexpected, try: 1) Moving the most important elements to the beginning, 2) Removing potentially conflicting keywords, 3) Being more specific about what you DON'T want, 4) Simplifying the prompt to focus on core elements.
Can I use negative prompts with NanoBananaTwo?
While NanoBananaTwo excels at understanding positive descriptions (what you DO want), you can also specify what to avoid within your main prompt. For example: 'a clean minimalist logo design without text or clutter'. Frame negatives positively when possible.

Put Your Prompt Skills to the Test

Practice these techniques with NanoBananaTwo. Start creating stunning images in seconds.