Yep the mouth is a bit small, but widen the nostril wings before you fix the mouth. Also don't forget the shorten the screen right eyebrow, and it wouldn't hurt to define the screen left eye a bit more. I'm also thinking the screen left eye is a bit too large, and it's slightly lower than the screen right one. You're getting there though, the wacom made a huge difference.
hmm think the mouth is off a bit too, not sure if it looks like it's attached to the face.
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