First 30 second pose practice

These are beautiful. For more dynamism, try exhaggerating the form just a little bit more. Like taking a soft curve of the spine and bending it a little more. Also, you might consider using a wrapping line to express some volume, perspective and proportions on your form. This will help neggate the "stick figure-y-ness". ;D

Here's a link to an example.

Excellent job with your invisible lines of action in some poses, Soft Circles, even now, here's my one very small request: Would you like to correctly practice them in 10 4 minute sketches (10x4m=40m), pretty please??? Why is that???? It's because the correctness of your L.O.A. will get to be even more stronger yet subtler in your next practice; furthermore, go for Vol. 1 of one of Walt Stanchfield's Books, please????? So that you get the best message on drawing your lines of rhythm, in your drawn animations. (if that's your focus) Appeal to that being totally supportive.

Polyvios Animations