The bottom of the coat indicated that the upward movement is sudden since it curls up over a few frames and then suddenly goes down to the straight frame, whereas the hair just curls up and down around the same both ways (but maybe more the opposite I guess). The amount of curling is also a bit too much, the reason why something curls like that is because the air resists its motion. Since the motion is only 'resisted' as it's falling it should not go higher than where it started. As such, I think it's too exaggerated right now.
For the forehead hair, I would make the hair go from still to fully extended in one frame (to express its speed) and then one or two frames as a transition to the still frame. The hair left behind after the character's blowing should be removed since it makes the frame look too much like the previous one. That's what I can think of to improve it, but usually with animating I have to use a lot of trial and error.
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