I appreciate when a girl does something interesting with her pose. A neck would make the photo better. Also, this reminds me of a dance recital costume I once had haha
Actually, at the first time i'm a bit surprised when she get breakdance. But this shot is awesomely awesome. She looked healthy and focus there, and i don't think neck is really necessary there.
This is a cool picture, for sure! Stick that right leg out a bit more and it would've flowed a bit better, maybe. But all in all great! Nice expression