Really nice work here, I look forward to seeing your progress! As for C&C: I feel like you could use a softer blur on the first one to still capture the effect you're going for. As is, the blur makes it look murky rather than giving the depth-of-field effect I think you're going for. I especially like the textures and coloring on the second one--definitely my favorite. The third one is really great, and I would love to see more detail, but I'd definitely make the grid a lot less bright/solid--the heavy white overwhelms the ship a bit at present.

All in all, really nice! Keep up the good work.