this detail is awesome! love the icy blue hues. one thing i noticed though - in adding the mountain background, especially the slope that fills the bottom half of the piece, you lost a lot of depth and put a damper on the sense of flying. I have to say I prefer the original for that reason, even though this one might look more "complete". I think it might be that the angle of the slope and the fact that its almost perpendicular to the staff she's riding
nonetheless, awesome work!