Great sense of energy! I like how you have her kinda fluttering her dress about, but I really like how you get a good sense of her movement, how she's gracefully skipping around. You only see her toes, which do a good job to imply how she's walking, but get this great sense of how she's moving, through how the skirt moves, through how her upper body is turned, through her body language as a whole.
And you really captured her gracefulness in her expression. Her eyes have a warm look to them, and her smile is cute, too.
Love the way you colored it. The sparkles add a good sense of lighting and a kinda dreamy, happy mood. I like how there are lighter and darker areas in the flat colors, too, that add to that mood and feel.