Cosmic Portal Cavern

Illustration · Portal · Cavern

Recipe

The style is the recipe. The subject is yours.

The examples above were generated with Nano Banana Pro and Seedream 4.5. The recipes below are written for GPT Image and Flux, so treat the settings as a starting point rather than the exact run.

GPT Image

gpt-image-1

Updated 13 Aug 2026

Full sentences. Describe the scene, then the medium, then the flaws you want kept in.

Make it yours

The recipe is the style, not the picture. Put your own subject in and the highlighted part of the prompt changes.

Prompt

Concept art built on scale: a vast rocky cavern opening onto a glowing ring of violet light that fills most of the space, stars and cloud visible through it. Rock walls framing the opening on every side, dust hanging in the air catching the glow, any figures present tiny enough to be almost lost. Painterly, atmospheric, overwhelming.

Use the examples as a reference

Download the examples

Send the example as an input image to the images.edits endpoint alongside the prompt, or attach it in ChatGPT. It follows composition closely, so describe your subject firmly or it will copy the example.