Yeah, eyelids and helmet both need some "thickening." As for the texturing, have been working on this fellow to be mainly a "toon" sort, and wasn't sure if I'd be taking him into heavy detail texturing, though if I do I'll definitely be wanting some good stuff for corneas, irises, etc... not to mention other areas.
When I'm ready to actually put this guy into "showtime," I'll probably create two versions... one of the whole figure, and the other just for close-ups of the face - for expressions. The close-up would then have the higher details of the eyes - thickened eyelids, etc.
I dunno, I might just get it all in shape with the same figure...