For a first draft it looks like it's comming along very nicely. But to make sure you keep going in the right direction (towards excellence) I have two thing to place on your 2Do list..
1) Add shadow to the deathstar type starbase. Try to match the shadow angle on the planet.
2) Don't forget to add more ships, and when you think you're done, add a few mor just to make sure you win the battle.
Oh, and welcome to the fun world of making intro screens.
Cheers!
