after toying around with it for a while i couldn't add much readability (without making it look terrible) to nose without adding shadows to the rest of the face, which imo didn't look any good. I decided on using a lighter shade for the line on the bottom to try to avoid it being read as a mouth in the first place, also edited the brow shadows a bit. At the size i couldn't get a mouth to look right so i just left it out.
anyway, i think i'm pretty much done with the portrait and would appreciate some feedback on the standing sprites