Nice work, would love to see those in a game

The jumping animation looks nice, and it's hard to critique not knowing how she will move in-game. Seeing as she gets down on her knees upon impact I'd recommend having her move her legs faster near the landing as this would increase the speed and power effect you already got going. Just adjusting the timing would most likely do it as the legs pose and position already looks good.

Also if she is going to be jumping down things(rooftops, balcony's etc) or doing long jumps you might want to add another frame to get a nice wind movement effect in the hair, nice work on getting character into it btw 

Also, alltough there are exceptions to every rule, straight lines are very often to nice and clean compared to their surroundings so I think you could benefit from changing her arm a bit so it's not perfectly aligned with the camera. She could just punch a little bit higher or lower or bend her arm slightly, I'm sure you'll work something out. I think the sword on the ninja might benefit in the same way if he tilted his hand slightly downwards which would go well with getting the feel that he is running and about to attack

Nice work so far and good luck to you