Dimpled right skin, riveted rear spar to it, fllush riveted ribs, connected rib halfs with pop rivets, installed front spar and riveted it to ribs. Riveted top and bottom skins to front spar, riveted gusset and shear clip to rib tips, riveted top and bottom skins to rip tips, prosealed foam ribs and trailing edge in place and weighted it down.