Very nice. To make it work better you could make the body turn a bit to tye right when the right leg is on front and the same with the left.

I love the pose while she's running, holding her arms down. Makes it look more cute. Most run animation have different arms in a different pose.

I think the problem with the arms is that there's no real shoulder definition; just one soft slope into the arms.

Other than that though, all three of these sprites are really good.

It's mega stiff hahah, still lots to learn : ).

Pretty decent animation, if not a bit stiff. Also I suggest that you offset the back or front leg a bit horizontally, the legs are strobing atm, because the animations overlap exactly