/ic/ - Artwork/Critique

Another newbie here. It has been a month since I started drawing (passionately, I mean). For some reason or another, the characters I draw "from head" turn out looking manlier or bigger boned than they should be, even if I don't fuck up the anatomy. Heads and faces are my biggest weakness; the only angle I can draw reliably is a direct back view. Mirroring the drawings doesn't really help me that often; in some cases, they end up looking even better to me.

Anyway, here I tried my best to make the woman look as feminine and lovely as possible, yet I still am not satisfied. I'd like some advice on how to fix the shapes so that the woman would be satisfyingly feminine and, preferably, smiling seductively (although the current sad look is fine too). Or are the shapes feminine already, and the only thing I need to do is to replace the hard lines with shading?

(Her head is turned about 4/5 of the way to her shoulder and tilted slightly upwards.)

Wouldn't mind comments about neck and ear shape/positions too.