I think she may be falling. Falling pictures without a reference sound very hard so I think this is great for someone who doesn't draw them regularly. I love the hair. I think that some read at the torso portion of her dress and some light pink/salmon color for the underskirt would look lovely. I think pastels look great when you balance them with a strong color.
In pretty anime when girls fall they make it so the dress is push up from the force, I'm not sure what you're thinking (i get the image but I don't understand why you asking about it). Care to elaborate? (sorry I just don't get what you mean <:D)
drawn in 47 min
drawn in 23 min
drawn in 1 hour 32 min
drawn in 49 min
But it still came out great! :D