Hy Image 3.5 prompt guide
The workspace follows the words you write. A useful prompt names the subject, the setting, the light, the crop, and any text that must appear.
What to include
Write the subject first, then the place, the light, the framing, and the words that should be readable. Add what to leave out, such as logos or extra people, in the same prompt.
A vague prompt and a specific one
“Make a poster” does not say what the poster is for, which words appear, or how the type should sit. The generator has to invent those choices.
“Editorial poster for a night market, bold bilingual headline NIGHT MARKET, gold ink on charcoal paper, film grain, wide margins” states the job, the readable text, the material, and the layout. That is the prompt used on the poster example.
Settings are separate from the prompt
Aspect ratio and resolution are controls, not sentences. 1K costs 10 credits, 2K costs 16, and 4K costs 24. Changing them does not require rewriting the prompt, but a wide ratio will crop a tall poster.