Not to worry, with time and practice you will improve without a doubt.
You have made some really good improvements compared to your drawings in May. You defiantly have the idea of rhythm for the body's gestural movement. I would suggest looking into the anatomy of arms and legs. I've noticed some of them are a bit off. Understanding the shapes of arms & legs will definitely help in the long run. Once you understand their basic structure, you can simplify them while keeping the proportions of your drawing as well.
I hope this was helpful and keep it up, these look really good so far. ^W^
Welcome \^w^, you have some nice work, looking forward to what you make later on.
