I cannot seem to stress this enough, I AM NOT A PROFESSIONAL, there is definitely room for improvement with my anatomy, but im just sharing a few tips on the way I myself draw.
This is the last one of these that Im making >.< (*off to make a proper tutorial*)
Theres a mini tutorial on the top right, its a bit vague but remember easiest way is to divide what you want to draw into shapes.
I drew a few more complex angles, just to show how the body changes and what the muscles do.
Drawing hands? apparently its the hardest thing to draw, and im gonna have to agree >.<! But there are a few tricks which i will explain more thoroughly in my tutorial, but for now the best what to draw them is to have a good look at your own hands and try to get an idea of the general shape. Also i suggest getting a mirror and having a look at them from different angles.
Once again, hope this was of some use.
*edit, thankyou for the DD TwT*
(preferably for anime use)