this image is a bit too busy, and not working too well for me. the stop-motion aspect of your snapshot takes away from really catching the wind. the toughest thing about challenge shooting is coming up with an idea and then executing it. it really does take time and practice. good luck!
The issue I had with this meeting the challenge, and it is by no means an issue with ust this phot, is showing just effects of wind, without really showing "Wind" It could just be that they were put up very badly and santa had too much to drink (:P). Had your composition not included the water, but some of the sky and showed branches being blown or something just to show not only the funny thing that wind did, but also that it was still there. Looking back, I did up the challenge score to "5"