This is a great scene with awesome details!!! Sadly, you'd never know it cause they all have the same importance. You'd benefit a lot by separating out these elements a bit. Silhouettes are your friend

Giving your viewer a focal point should be your priority to a strong piece.
Couldn't agree more about the orange....it's a nice touch and it draws your eye, but use it to your advantage. Maybe one more ship in the middle? Getting cargo loaded onto it or something? Other than that bravo, this is awesome!
Quick and dirty in photoshop.....
- Killer
Sr. Environment Artist
Zipper Interactive