After a good long look at the skin under production (Im really bored here), I have 2 suggestions-
1. The lettering on the side looks too thin, maybe a bolder face on the font?
2. Rotate all the national insignias 90 degrees counterclockwise (as they appear on the plane)- the weathering on the wings is going from right to left, and the fuselage from top to bottom. Or maybe just rotate the wing insignias? The top-to-bottom weathering on the fuselage ones may work, I dunno.
Other than that, I love it, and I shouldn't criticize, because its worlds away from my meager capabilities.