Love the pose, though the arms I don't think are expressing your intention with it, which I have to assume I understand and may be wrong. If I'm right, her left hand should be hanging limp, instead of extended. She's a bit tall/vertically stretched, though she's so cartoony it doens't hurt much if at all.
Would a little more female torso curvature help convey the atttitude ? - you know how females can stand in that relaxed posture that really emphasizes the curve of their hips/midsection. Also on her stance, doesn she not appear to be leaning backwards, as if up against something/center of gravity a little odd?