I'm really excited you put this in the forums!!
I really am a total noob at shading skins..
thats why I use gimp..
but i'm tired of using gimp and i want to use my hands!!
My wrist currently has a cast so I can't, but when it feels better I want to shade.
Something like this:
http://www.planetminecraft.com/skin/-reshade-600-subs-contest/