Getting back into drawing again!

Hello!! Been a while since I drew, on paper particularly. The first pic were 5 min and the second were 2 min. What can I improve? What already works? Thanks!!
https://imgur.com/a/vhGyfEc

Holy cow these are amazing!! I see a lot of confidence with your line control, and each pose is readable and has character! 
If I were you, I would practice some sketches that focus on where the center of weight is in the figure, and how that relates to the feet and ground. Maybe also darken or thicken some of the lines to add weight or dynamics? Only if you wanted to. These are very good

Hey this is super useful tysm!