It does need some work, but it could easily become very cool! Few points I think you should work on: I don't think the enemies should be trying to run into you, it'd be much cooler if they engaged in naval combat, although that is a bit hard to do. This would be a very ambitious project. Also the water really could look better, again pretty hard. I don't think I could do as much as you did to be honest, congrats on the submission!