AI Image Generator Guide: Prompts, Ratios, and Review

An AI image generator is most useful when you treat each image as a production brief. Describe the subject, setting, composition, lighting, intended use, and text requirements. Then choose the right aspect ratio, generate a small set of options, and review the result before publishing.

Start the image workflow at https://trymodel.chat/image. The page supports a prompt, model selection, aspect-ratio controls, reference images, and downloads.

A reliable image prompt structure

Use this order:

1. asset type and purpose;
2. main subject;
3. environment and composition;
4. camera, lighting, and material details;
5. color and style direction;
6. text that must be readable;
7. exclusions or safety constraints.

Example:

Create a wide product hero image for a tea brand. Place a matte white tea canister on a pale stone table, with soft morning light from the left and generous negative space on the right for website copy. Keep the label clean and readable: “PURE TEA”. Use a restrained editorial product-photography style.

The purpose tells the model how the image will be judged. A product hero needs usable negative space, while a portrait may prioritize the face and crop.

Choose the aspect ratio before generation

Use 1:1 for profile images and square product tiles. Use 16:9 for a desktop hero or video thumbnail. Use 9:16 for stories and mobile-first posters. Use 4:3 or 3:4 when the subject needs more room than a square provides.

Changing the ratio after generation can cut off the subject or move important text. Decide where the image will appear before writing the prompt.

Reference images need a clear job

Upload a reference image when you need to preserve a product shape, pose, composition, or visual direction. State exactly what should remain and what should change. For example, “preserve the object silhouette and camera angle, but replace the background with a clean studio scene.”

Only use images you have permission to process. Remove private metadata where appropriate, and do not assume an AI edit preserves legal rights to a person, logo, or artwork.

Readable text still needs review

Short labels often work better than paragraphs, but generated text can still contain incorrect letters. Check every name, number, price, URL, QR code, and legal statement. If the text matters commercially, finish the typography in a design tool after generation.

Use https://trymodel.chat/blog/ai-prompt-writing-guide for a prompt structure you can reuse across image and text workflows.

A publish-ready checklist

• Is the subject correct and free of obvious artifacts?
• Are hands, faces, product edges, and reflections acceptable?
• Is the crop safe for the target placement?
• Is all visible text correct and readable?
• Are brand claims, logos, and people approved?
• Does the file format and size match the destination?
• Does the final page include useful alt text?

An AI image generator accelerates exploration, but the final review remains a human responsibility. Create fewer, better-defined options and keep the prompt that produced the strongest result.