Almost nothing "wrong" (actually, there's nothing wrong, it's only "improvable") about this fighter, good overall design, nice wings, nice cockpit, nice engines, nice double-fin tail to the ship, but as Ben H said, some improvement could be done to the top of the MOC. Looking forward to a second version to this.
Freedom!
I like the overall shape, the angled fins, and the detail on the top. The biggest problem here is the giant gaps in the top of the jet's main engines -- those need to be filled in with slopes.