BACKSTORY: Years ago I was gifted a pizza cutter modelled after the Star Trek Starship Enterprise. Only used once and discovered it was worthless on a pizza thicker than 1/8 inch.
About four years later work one day I found the brass piece that you see as the base of the chimney and my mind flashed "Hey that looks like a chimney. Wait...I wonder if I can find that ol' pizza cutter..." So, a bit of gathering more odd parts, a bunch of glueing and painting and Ta-Da: Finished.
Last week I went to a craft store and picked up a couple frames, tracing paper and card stock. When I got home I manufactured a diffuser for my rarely used flash and also a reflector.
Minimal processing in LR.
EOS R 1/200 sec at f/11, ISO 100, 70mm (RF24-70mm f2.8)
Cool idea.
As for the photo, my eye seems to be drawn to the ships aft where the is less work. O think it is due to having the most contrast. it might be worth trying it with a bounce card to lighten up the black on the nacelles and engineering section.
Here is my setup I use with the Steampunk Tardis. I think I just need some proper tools of the trade!
L to R
Flash, Diffuser, Subject on Black Paper Curled Up, White Card Stock Reflector
Using what you got is not a problem. If you used the same setup them, pulling the right block forward changing the angle so that the light its around the nacelles.
The other option is to take 2nd shot from with the defused flash right side about a 45-degree angle one stop underexposed and used it to lighten the image needed areas.