1 is nice and sharp, but the subject and whatever is in her mouth doesn't do it for me. This also is hurt by landscape orientation.
2 Is more of a serious photo. I am not the fan of selective coloring, as well as the tilted horizon. But your subject is posed in a flattering way compared to photo 1.
3 Is probably the weakest out of all of them. She's too close to the edge of the frame, and the background is very distracting. She's also in a ridiculous pose, facing out of the frame towards the side closest to her.