i feel ya.
(not like that, internet you bad boy!) i cannot for the life of me get proportion right.
with here it doesnt really show, just small things on the face...which is why unless it`s anime i`d tend to stay away from humans. people hone in on imperfections, and anything can be if it`s a drawing. anime people accept this, so try chibi or manga plz!
better than expected.
http://www.newgrounds.com/art/view/knockwurst/shade-anime-style