Those are some great images!
The Death Star is basically just a giant sphere... So you could adapt any large circle into a Death Star with the right colour fabric. Alternatively you could do a lot of star destroyers. These are basically triangular shaped ships. I'm sure you could imagine a ton of ways to incorporate triangles.
I have also also seen patterns on craftsy for some of the Star Wars characters. I can't say they are incredible, but might be worth a look.
Good luck!