if she's just going to be playfully bobbing up and down on her tippytoes, why not express some childhood innocence into her actions? I'd imagine she'd be possibly swinger her bear slightly or even tiping her head from side from side.. With a bit more expression even leaning back and forth like one of those old fashioned policemen. (If u dont know what I mean don't worry). Another suggestion is she could have her right arm behind her back, and maybe here shoulders are too high, overall it look abit robotic, imo you need to be a bit looser.
I like the style, I think the design could be improved still good.