first one is just horrible. The picture is okay, the pose for her aint working. The smile and angle makes her look gawky and the nose pronounces out. Angled from the side like that with the teeth exposed she could be mistaken for a human piranha. The cheek bones don't fly in the first picture. The hair hanging down looks like it is a weight draggin her head down, and her head is disproportionate to her body partly because of the hair. The Third one, clarity is good. Picture really good. But the glasses school teacher type thing is so over done I wouldn't give it much credence.
Also she keeps a arm over the midsection in the last too. She covering a belly? YOu can shoot around that, the arm covering don't fly too well though its too obvious. The second photo, while the worst of the bunch actually has the most potential. That is a incredible base to start with. The twirling the fingers doubles with chewing bubble gum look for the cheerleader thing. OR It can also fly for the seductive approach on a much deeper level. The second picture, I would do that again. And start from that point as it offers the most options and you have a incredible model to work with provided you avoid what you did in that first picture. Accentuate the positives, not her negatives.