My Custom Mario-themed Spritesheets

[LeleleleMAXIMUM]

I think you should take out the motion blur since that kind of motion blur suggests an opening animation, when it is actually a closing animation.
I use GraphicsGale for rotating shit, but you shouldn't rely on it heavily.

Anyway, I think after you fix that certain frame, maybe you could also fix the other blurry frames, namely 5,6, and 7. Just clean them up.

Optional: I think his re-entry into the soil needs more anticipation. You know how when you punch, you pull back your arm first? That's anticipation, and I think the animation will benefit from this.

Great job, overall.