Thats really pretty, I like where you are going with it. The right arm (my right, her left) seems to be moving from a totally different wind source from the rest tho, and is generally a great deal less smooth. The sleeve is kind of doing this 1-2-rest-rest thing on a shuffle... erm, pardon the music vernacular, it moves twice, rather jarringly, in rapid succession then hangs for a second and does it again, well the rest is blowing super smooth. That totally would happen if there was a sudden gust of wind, but that isnt how the wind is moving in the rest of the piece.
There are also a few pixels popping in and out of existence that are a bit jarring, there's one around the right shoulder (just under,) and two on her right leg, just below the hips, that also happen to be a much lighter white then really makes sense.
Anyhow, keep it up, this is gorgeous.