I tried to sketch those three characters but my sketch seems a bit "nervous" and I have the feeling I do not have 100% control of my sketch lines. I don't know if it is due to the lack of experience or something else. In particular, I found it quite difficult to sketch the hand..

Hello everyone, here my attempts (before and after watching the demo). I think the demo helped me to get better proportions and shoelaces. During my second attempt I spent more time. Any feedback is welcome :)