Here's a thing I found interesting and that I'd like your thoughts on. I'm (still) trying to get my gestures more fliud and dynamic, and I realised I'm working with my wrist not my shoulder. So I stood up to draw instead of sitting down. It seems to me to have had quite an impact.
These two images are showing the same poses drawn sitting (top row), and standing (bottom row). The bottom ones look much more flowing to me. Do you agree?
I may not be the right person to give out critique, but if you watch proko's video on gesture he says you shouldn't always focus on the contour, but the way the drawing feels to you. Your drawings look a bit too stiff, maybe loosen up a bit.