A GIF animation I made..

[DioShiba]

Just please don't mention a very old art of mine again!

Stop with this mentality.

I get that no artist doesn't like having their old work be brought up. Especially if it's not good work. But you will not be able to improve on your skills or your work ethic thinking like this.

From what I can tell, you need to look at more anatomy from the surface level. I can see why Gors is saying that you still need to improve on that. It takes practice to really nail the anatomy down perfectly so with that in mind you can eventually learn to draw the anatomy by instinct after taking a few years of life drawing sessions (like, as in litterally looking at people from observation).

There are also some authors such as Andrew Loomis and Burnes Hogarth who both have some really great books that could give you some insight too, don't be afraid to do a little further research! These guys can go hand in hand with the Richard Williams book as well if you really want to get into animating.

I can tell you want to get into animating. I've been in the same spot as you, but first learn how to draw good and see yourself improve as others look at your work. It will benefit you in the long run.