Space station generation using reference image

For this experiment, I wanted to use a sketch I drew as a structural reference. The idea is based on a space station orbiting a planet near a nebula.

I learned the structural image should be reasonably detailed to get good a more realistic result. My sketch was rough, and some of the generated images looked more like a drawing than a realistic object.

An Australian landscape of rolling hills and green grass

I drew this rough sketch on my iPad many years ago. So used this as a structural reference for Adobe Firefly. I was particularly interested in having the aerial / antennae features.

Here are three different generations. The first, (my favourite) had these settings:

Prompt: Futuristic space station, near nebula
Structure reference = mid
Style reference: visual intensity = max, strength = mid