I like this one, she looks happy about something... almost like she's falling back through the air. However, saying that I would like to see a bit more contrast to bring out the angles more.
this seems unneccessarily soft - doesn't add to the image, imo. a little more sharpness would have been nice to bring out the details in her hair and separate it from the background. also the balance of her pose and/or the composition seems to be off.