New here! Would appreciate some critique on gestures!

Hi everyone! For this month, I'm trying to challenge myself to practice figure drawing. I've been just doing the 30min class session for now, and would appreicate any critique on how to improve my figures (https://imgur.com/a/lU4up7R). I'm really struggling on getting the timing down on the 30 sec poses (usually need to spend a few extra secs), and general pose exaggeration and capturing forms. Any critique is highly appreciated!