After all the sleek SNOT MOCs, seeing studs in this scale is a bit odd, but I like it nevertheless.
The shape is great, although not perfect; the top fin looks a tad too large and the flaps on the wings are somewhat inaccurate. The black colour works well (dark bley might be better, though), it looks like highlights in some other colours wouldn't even look that good.
There are some things that could be improved. First of all, the cockpit, especially the gap in it. Making the cockpit sleeker and filling the gap wouldn't be bad ideas at all, I think.
Secondly, the craft looks quite plain. The original model is not very detailed, so therefore the plainness is even accurate, but I think some brick-made texture here and there on the body might look good. Some greebling where the body and the wings join, for example.