Nice
Some minor critiques though, as a composition.
1) Spinning!
I know you're using your tried-and-true method of getting a FS2 cap and rendering with that as the background. Get a still cap though, as the starlines provide a contradictory sense of motion. I'd imagine this would be a trivial change though.
2) Synchronized fire
Are those supposed to be muzzel flashes or plasma bolts? If muzzle flashes, you should probably have them spaced a bit more and have some not present on the cannons. If they are the projectiles themselves, move some of them off of the barrels so it looks like there is some delay in firing from one gun to the next. I could perhaps see one ship firing everything at once. But both?
Those things said, I am continually amazed at what you can come up with through DOGA. I can't help but reiterate that I think that, given the proper tools, you would make an excellent moddeler. But even if DoGA is more your style, keep up the good work
