Ahhh...I actually work with Photoshop (and it's kin) for a living and I used to edit the boot screens of Windows and the like. I even did a single UV map years ago.
Th need for plug-ins, different specifications for every game using them and the quirkiness and need for multiple programs to do half of them just turned me off to it.
I suppose I can get motivated at some point and give it a go but I barely have the time to work on the actual game and play--hence I post a lot (it's faster).
Here's my one ship design and texture(s) that made it into a game (the textures are intentionally mismatched):