the front view looks good, but the 3/4 view shows mistakes:
directly next to the eyes there shouldnt be as much of a ridge. in the 3/4 view, the eyes edge should have a very thin border to the background.
the cheeckbones need to move forward and outwards.
the cheeck should move in a bit.
check these shots for refrence:
http://www.stephena.pwp.blueyonder.co.uk/scans/ncamp.jpg
http://media.supereva.it/bellevip/celeb/Na...ll/fash4993.jpg
http://island.site.ne.jp/mjfox/filmo/image/n_campbell.jpg
http://www.123.com/sp/entretenimiento/sect...d_content=88935
take note of the profile on the turned away side of the face. along the lid it moves in towards the eyes edge, then out for the cheekbone, then slightly in for the cheeck again and out for the chin. (your profile moves out at the eye, slightly in at the cheekbone and then straight to the chin)
nice splineage!
EDIT:
huh! didnt see there was a 2nd page to the wip ..
looking a lot better already, but the problem i mentioned above is still there (though not visible as stongly because her ear adds to the profile)