Just retouched this thumbnail set I did a couple years ago. Clear the lines a bit and alter a some design along the way.
Every ship is a smart object with lines on a separate layer, you can alter the design also as you like.
In case you wanna have something to start with some random shapes / details, you can give it a try.
PSD file available in my store: https://artstn.co/m/Xmx5l
Hope you like it. :)