/3/ - 3DCG

So Im making this stupid plane to try my hand at game asset creation and ran into a couple of problems I cant solve.
First I have these awful shading issues on the sides of the wings, probably because of the weirdly shaped face right next to it but I cant figure out how to fix without redoing everything.
Secondly, It seems like its lacking detail of some sort. I thought of adding nuts and bolts where the metal sheets would meet but I dont really know if its best to put those on the texture or should I just model those.