It just struck me... The inner pair of nacelles remind me of a combination between a K'T'inga-class cruiser and a refitted Constitution-class Starship, with the outer pair resembing those of a Sovereign-class's nacelles, and the forward section of the hull like a giant Vor'cha-class cruiser's "head". It's also reminicent of a sci-fi fighter craft that was introduced in a first-person shooter game ten years ago...
In any case, nice job.
Edit: I should remember to pay attention to the picture again... I should've realized the engines were all the same... It looks like something from the Constitution-class refit and K'T'inga-class if you view the engine from the top-side, but not in most any other angle on viewing it...