Some notes:
* the head is stiff -- needs to bob with movement
* the hair needs to have more bounce/movement too
at the least some sorta breezy motion
* the legs are really thin
you can either stylize this in a more cartoonish format
or possibly cut out the height and shorten the character
or simple add some weight to them
* the shin area is animating oddly -- although the feet are fine
* the arm swing is in full windmill -- either naturalize the animation more to dangle





OR for a more arm-to-chest swing, lean her posture into a jog animation, starting with elbows bent


edit: apologies, not one for references but perhaps these examples are better/relevant?
These are just a few technical things atm that I can see