Hi Nenastik! Great work! For 2-7 mins these are very nice and even detailed compared to some of the work I've seen around here, mine included (I'm still a beginner so my input might not weigh anything).
I think the last two ppl above said that maybe you should try drawing with your other hand a few sketches (if you're a righty then go lefty) and if you haven't done the tutorial here, it's a good place to revisit the basics - a) the line of action, b) head, ribcage, hips, c) joints and members, d) other details - here's a link - https://line-of-action.com/learn-to-draw . It's only 15 mins, but it packs a nice punch! :D
