little off topic but maybe somebody know did bioware facial textures for Mass effect by hand painting or they use photo ? (as example Shepard Miranda Jacob )
I think you're trying to get too much done at once, take your time, but more importantly go easy on the strength of the brush and don't use soft edge brushes all the time unless its for something like gradients. Grab a hard edge brush and zoom in (no really zoom in) for this example i'll just fiddle with the belt, its 3:30…