Robo beans I've done. Any advice on how to improve? I'd greatly appreciate it :)

Some attempts of landmarks, done in different days. Since, honestly, I don't know much about muscles and stuff, I didn't draw almost any of them; just the landmarks. I still quite struggle to get a good, well conveyed pose; with landmarks placed correctly in it, too; plus, I feel like I didn't measure well in most of them lol. So, any advice on how to improve? It'd be greatly appreciated ^^

Hi, here's a page of beans. I never feel quite sure of how good I am doing whenever I draw them lol. Any advice/feedback?

Hi there! Here's a page of 30 second poses and some 2 minute poses. Any advice on how to improve? It's not really my first time attempting them, but of course, I wanna check if I am moving in the right direction. Thanks!