so, on the last one, kne foot is way bigger than the other, as well as for the other drawings, all the proportions are a tab bit off, the arms differ in size from the other arms, the legs are a little it high up on the first 2, maybe try looksing at anatomy of the human body, it'll help a lot and also try using like a rubber band, or small paperclip to help measure out the lengh or arms, it helps a bunchc and i also urge you to clean up the line work a bit,it really helps make the peice looks a who lot clearner, neat and sharp, these toips are frpm personal experience and you don;t have to consider than or listen to them if you don;t want to and don;t worry if you don;t all get it perfect now, you can only get better, it takes time, but you'll always improve

owo wait WHAT?!

oh, try using a styleous or zooming in to help get the small details, drawing on a phone is hard, so kudos to yuo for sticking with it