Prompt guide

How to Write Image Prompts

Learn subject, style, lighting, camera, composition, and negative constraints for better AI images.

Learn subject, style, lighting, camera, composition, and negative constraints for better AI images. This guide is written for people who want useful output, not theory for its own sake. The goal is to help you move from vague requests to prompts that are specific, testable, and easy to improve.

Start With the Job

Before writing a prompt for AI image generation, define the job in one sentence. A good job statement says what you want, who it is for, why it matters, and how the answer should be used. For example, "create a landing page outline for a SaaS tool aimed at freelancers" is stronger than "write a landing page" because it gives the AI a target. When the job is clear, the model can choose the right level of detail, avoid generic filler, and structure the response around the outcome.

Add Context and Constraints

Context is the difference between a generic answer and a useful answer. Add audience details, product facts, existing notes, tone rules, required sections, length limits, examples, and things to avoid. Constraints are not meant to restrict creativity; they help the AI make better choices. If you need a beginner explanation, say so. If you need a table, checklist, JSON, code, headline options, or a visual prompt, specify that before generation starts.

Use Variables Instead of Starting Over

Reusable prompts work best when they contain placeholders like [AUDIENCE], [GOAL], [CONTEXT], and [OUTPUT FORMAT]. This keeps the prompt flexible without making it vague. Replace every placeholder before you run it. If a prompt has too many placeholders, fill the most important ones first: audience, task, constraints, and output format. Then run a second improvement prompt asking the AI to identify missing information.

Ask for a Draft, Then a Critique

The first answer should rarely be the final answer. For better results, ask the AI to create a draft, critique it against your goal, and then revise it. This two-pass workflow is especially helpful for AI image generation because it forces the model to evaluate relevance, clarity, completeness, and practical usefulness. You can also ask for alternate versions: simple, expert, concise, persuasive, visual, technical, or SEO-focused.

Example Prompt Framework

Act as a [ROLE]. Help me create [TASK] for [AUDIENCE].
Context: [CONTEXT]
Constraints: [CONSTRAINTS]
Output format: [FORMAT]
Before finalizing, check the answer for missing assumptions, weak details, and unclear next steps.

Quality Checklist

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FAQ

Questions people ask

Do I need advanced prompt engineering to use this guide?

No. The guide focuses on clear context, examples, constraints, and output formats that beginners can use immediately.

Which AI tool should I start with?

Start with the tool you already use, then compare outputs in ChatGPT, Claude, or Gemini when quality matters.

How should I improve a weak AI response?

Ask the AI to critique the answer against your goal, add missing context, and request a revised version with a specific format.

Can I reuse the examples for business or school?

Yes, but replace the placeholders with your own facts and review the final output for accuracy before publishing or submitting it.