Today my brother and I riveted on the top skins on the right wing. Most of the rivets had to be set using a rivet gun and bucking bar but the ones along the rear spar could and were set using a pneumatic rivet squeezer. All in all it wasn't too hard of a project. We worked from the middle rib of the inboard skin outward to the lap joint between the skins. Then worked back toward the inboard ribs of that skin. We did the same thing on the outboard skin. The last thing to do was the lap joint between the skins.