Your first is the best, but you need to drop the animation gimmick, or at least tone it down. The reason I say the first is the best is because you don't overuse filters (sunburst, liquify, etc.), and the ship isn't front and center. In design, the center is hard to pull off properly, I'd suggest offsetting to either side. Also on the first, there's a slight bit of white around the battleship. If you use Photoshop, get used to masking using the pen tool. Draw the outline of the ship you are cutting out. Click and drag to create bends. It'll take a bit to get used to, but it's much better than the selection tool. After you have the ship outlined and closed the path (connected the ends), right click and select "Make mask" or something like that. Google search for "tutorial pen mask" and you should find some videos.
Best suggestions. Also, good work sticking to a colour scheme in the first, it helps it feel more properly composed.
