This has a great sense of movement, and you have succeeded well in stopping the motion. Well done.
The spectators in the background are indeed distracting, unfortunately there isn't really much you can do about it in such a setting. Apart from this my only comment is to do with the colour contrast: the combination of the blue and yellow overlapping as they do, with the green grass background makes it really difficult for the eye to pick out the definition on where the subject ends and the background starts. I think this might be a result of your boosting the saturation on the whole image. With an advanced editing challenge I would have recommended you place the dancer in a seperate layer to get perfect.
I hope my comments help and Good Luck in future Challenges!
First - Wow! Bright!!! Maybe too bright? I think the color saturation is a little too much, and you're a little sharp also. This looks like a fun event to photograph. Good luck in the challenge.