Sweet anim! I don't think I've ever seen a sprite that renders the planes of the face as well as per pixel lighting. Sets a new bar for me :p
Anyway I have an edit for you and some teeny bits of advice
So after agonizing over exactly what could possibly be made better I came up with a few subtle points and one not so subtle.
1. When her arms swing back from the max position the spacing for them is very even. In this edit I've made it take a bit longer for her to pull her arm back in front of her. What that does is adds that pendulum effect. You actually have it working quite well when she has her arms at the max distance in front of her and as she begins to pull away. It's very smooth and not jarring. I just took that effect and use it on the back swing.
2. I very subtley made her chest move just a bit. Just to add that extra bit of movement flare. I added a slight bounce as well as her armor dragging a bit behind the main movement.
3. I have her head seemingly dragging behind her body as she falls to the ground and when she rises.
4.I added some highlights to her pants, and boots. (not necessary by any means but it's something that could be done)
5. I have the bottom of her shirt following through with the movement of her body. Once again subtlety is key here. When she falls it drags behind her and when she hits the ground it follows.
I think that's all I edit
Here's a side by side (hope this helps out in anyway possible)
