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The 3D and texturing is very competent so my compliments to you on that. The only real issue I have is that the ships look rather generic, almost like stock art you could buy online. I think the main reason for this is all the sharp angles on the ships, they have a very bulky, blocky industrial look to them which might be appropriate for the setting but kind of detracts from the potential beauty of them by having longer lines and more curved shapes.
Please delete post. Thank you.