Quoting Milos Jovanovic
You got the shape really nice, but there's still room for improvement. You should definitely return to it after a while and make a 2.0 version. Now, let's see that MiG-21! :-)
Always room for improvement, my friend :) I'll do that, so could you tell me where to improve on, or maybe you could help me out a bit? And i'll post my MiG-21, I'm happy with how it turned out.