Nice idea. The image is a little on the soft/fuzzy side. Also looks like some additional contrast would help some. Were you including the foreground for context? Is it something she is jumping off of? It almost looks like a mistake. Not sure how to explain it...sorry. I guess if you are going to have the wall there, include a little bit more or lose it entirely. You had a nice sky to work with. A polarizing filter may have deepend the blue some for you. Best of luck to you in the challenge.
Lovely sky in this image! And good job with the stopped motion. My only nitpick is that I find the stone wall in the foreground to be slightly distracting.
Good execution and I like the overall idea. I would perhaps suggest a more off center crop of the main subject. I would also crop more of the rock wall / ledge to make her appear to be higher in the sky. Colors could be bumped up a bit and sharpen the image and you'd really have a knock out shot.