Hello N55! Nice pixelwork, you just lost some volume in her band thing in her leg.
I am not very familiar with Hinata's design but I can try to help you a bit.
I've struggled with your same problem 2 years ago.
The answer to make a more subtle movement is subpixel animation.
Truth be told, that is that is just a fancy name to moving pixels inside the shapes without altering the outline or general format of each part.
I've made an example on how the technique works:

And to talk a little about the turn.
The issue is you've made the key frames but you did not make the inbtweens.
Here's is how I would solve the problem:
To solve this you could take a look at some animation books to try to understand the process.
The animator's survival kit is a good example.
But the heart of animation are the splines, in traditional animation the used jargon is timing.
Here's some examples:
https://easings.net/pt-brHope this helps you a bit.