I have to agree with Aeroscout, the model seems a bit off. This is meant as constructive critizism, so dont take it the wrong way, but the first thing that strikes me is that the tail section of the aicraft is off, the engine nozzles should be at more of an angle than they are, the part of the tail that's between the engines nozzles and the tail seems to be a bit to thin. As some have pointed out earlier the nose is a bit off, and the "plates" (dont know what they are called) infront of the air intakes are a bit out of shape. And lastly the whole model seems to be more low poly than the one that's allready in the game. Dont be discouraged though, I would say that there are quite a few things to fix on the model, but if you fix these problems I think it could be pretty damn sweet ;)
Oh yeah, and one more thing, dont use photos as referance for modeling! They are allmost never dead on, so your model will allways look a bit off because you are building it off of a photo taken at a slight angle. Well, anyway, good luck with the Phantom, looking forward to seeing the finished product.