Thank you for your critique.Nice color code, and engines (looked at the 3d model).
I think its a good work and if I criticise it I might not hit the right nerve, because I don't know the purpose and intentions of your design. But maybe you like to hear some stuff I noticed. If not just ignore it.
I would certainly add much more details, like deco fans or scafolds or metal mesh/grid, or some some pipe thingy going over the wings. Also you can add many many lights, hidden and obvious ones. And some ventilation shafts right to the body on the top are possible too. Last thing that I noticed by a quick glance is the transition between the black and the brighter colors, I would make some more "cougary" stripes going to the front.
If you want to emphatise on the bulkyness of the wings I also can suggest to add some parallel 1/4th slabs going over them to resemble some sort of supporting plating.
If you want the wings to be more wingy but not destory the overall shape and feel of the fighter, I suggest to make some sort of convex curve into the middle of the wing using slabs. Like some1 pressed an egg on top of the wings. ^^
I do want to add more flair to my fighter designs, but the idea clashes with my desire to have a minimum of 'greebling', especially on fighter craft. So I think it will be a while before I add more detailing to them. But it will come. The updates I did were to add some details, like the rear of the fighter, with the small vents on top, and the red 'sublight engines' to the sides of the main engine. It's a start, at least.