Hmmmmmmmmmmmm......well if i were to point something out....it would be on balance. You see on the left image her leg is forward....so i can see how she "would" balance herself. On the right both legs seem to be pointing back so it would seem like she's tipping forward. nothing wrong with that though. If shes falling forward then play with that pose...if shes balancing play with that too. This is more of an observation than an actual critique.
- I can't put my thumb on it really