While the attention too detail is all very good, the design is very simple and a bit boring. You should try too make your spaceships look exciting, not just several circles stuck together. Remember spaceships have to look purposeful and most of all, epic!
I find that the design process is more important than doing all the fiddly details. I know you said you weren’t great at drawing but you should try make a few quick sketches first, to home in on a good overall design.
Apart for that, the detailing is very good, if you can combine it with a neat ship design you’ll be on to a winner. 
I agree, it is a bit boring. I had a different design sketch originally, but it came out far too spartan - I can't seem to get large ships right just yet. Instead I decided to turn what I had into a mobile defense platform of sorts, though the outcome was a bit bland indeed with the odd way it came to be. I'm happy to hear you like the details, though - that was what I learned most of when I was creating this thing, and that's what I'll apply to more interesting designs later.
dont forget to say something about the outlines
try outline it but dont make it look like its outlined.
outlines can make stuff more clearly but willl also tend to make things flat.
Funny you should say that - I've actually been playing with edge brightness and general contrast/sharpness a bit lately, which tidied up the outlines a lot in my personal view. Have a look:
Old above, new below. What do you think?
PS. I'll stop thread-jacking after this post - I have my own topic for my own stuff too, now.
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