19-Second Scribble Hands and Feet Exercise

Done as part of a practice session with poses of 19 seconds in length.

My current goal is: Make my hand and foot forces really elastic and more squashier-stretchier.

This is my latest drawing scribbly exercise, that has to do with my current goal for the week. Critiques please?

-P.s. I've really returned from my break from critiques and comments. Sorry to be late.