Very smooth animations and I will agree with all Mathias' points - except that I saw a 'skull' instead of a white rabbit.
The sword at the end of the slice animation is one of those cases where you want to mix up the line a little. Instead of the 1,1,1,1,1,1,2,2,2,2,4 that the sword uses at the moment (which creates the awkward bend when the line changes from 1 to 2) mix the line a little in a similar way to dithering. 1,1,1,2,1,1,2,1,2,2,4 or something. You might also find the line easier to draw smoothly if you can raise the end of the sword by a couple of pixels making the overall angle a little easier to draw cleanly.
The only thing however that struck me first off, was that she seemed very unhappy, especially compared to your reference animation where she has a noticeable smile. Your smile blurs somewhat with her rosy cheeks and gives her quite grumpy instead

I love the 'shimmering' effect while floating through the air mid-jump, though perhaps the 'swoosh' effect on her one foot coming forward mid jump (jump-up + fall-down) is a little too strong.
Lastly, I think extra shadowing is called for or perhaps some added contrast. Her apron seems more like decoration of her dress and not 'on top' of it. Likewise, her legs seem to merge with the skirt instead of coming from inside it.
-Z-