I notice that you can fully see all of the ships. You might want to think about overlapping some, and having some going out of the screen, this will give the impression of a larger battle seen. I learned this from building electric train sets, the more that appears to be hidden, the larger the scene looks. You may want to put in on one of the edges or the picture the bottom, top, or side of a capital ship close up, or a wing of a wayward tri fighter. The planet looks fantastic, and the ship models are extremely acruate and detailed. An explosion or two at the terminus of the weapons fire might add some excitement, and flashes around weapon origins (maybe at different intensities to imply weapons at different stages of the firing cycles) would add some realism. Overall, I like it alot, the picture is inspiring, it makes me want to try something like that.