I really like this ship, but that nose gun seems a bit odd.
Me, personally, I'd:
a:) the top intake, remove the neck from it, so that it's flush with the top of the hull.
b:)enlarge the intakes considerably
c.) put the rudders on the intakes instead and make them a bit more upright.
d.)the side mount gun placements are good, guns themselves would get replaced with some pre-made higher def ones
e.)Looks like it's missing a front support bar across the canopy.
f.)perhaps raise the canopy up just a bit.
g.)the wingtip thing on the outside (not the side thats connected to the wing) could use some camfering.
h.)perhaps use those wingtip things are part of the engine system?