Well, here is the good that I see in her: she doesn't seem to be cow hocked much, she has a nice short back, nicely sloped shoulder, and a pretty head.
The not-so-good that I see: she is a little upright in her pasterns, she is built very downhill which might make saddle fitting later on more difficult, and her neck ties in a little low for what I like.
However, other than that, I'd say she's a pretty nice looking filly. I'd say that she will grow out of the being built downhill, but she might still be a bit downhill even after she matures. Good luck with her. Pretty color, too.