I tried, and I just can't.
If you don't mind, could I use your motion data in a dance of mine?^^
I really can't make Her spin.
It goes faster and slower at moments, and I would be supergrateful ^^
With any motion, BEFORE even contemplating animating it, think it through and even better, do the motion yourself. Only once you have it fairly clear in your mind should you even try to animate the model in MMD. Doing it this way, it's a lot easier.