is the rightmost part of the nose supposed to be that dirty? looks a bit overdone. sure, she could have dust in her face or something, but that wouldn't go well with the makeup, and it's just in the wrong place. if it's a shadow: shadows are never black/gray on skin... they're usually green or something along those lines, i believe. great work though... again, keep it up!
~"I never let school interfere with my education"~ -Mark Twain