Her mouth is very tense, but the first think I noticed about the pic is the lack of power in her eyes. The position of her hand and the angle of her face is great, just the mouth and eyes need work. Its still very fierce and definitely better than Norelle's and Toccara's.
The position of her mouth and hand is really good, but they eyes are quite dull and her mouth is so bland. If she had opened her mouth a bit more and opened her eyes a bit more, and it would have been a great shot.