Have a look at @willwestonstudio on Instagram. I recommend him in particular because he has a very systematic approach to the figure that uses a lot of midpoints and makes the figure easy to analyze.
It also might be helpful to set the angles of the shoulders and the hips, which are always at an inverse relationship. This helps establish the torque in the pose. It's one of the very first things to look at. Using boxes rather than circles to map the figure will also help with sides of the figure and put it in dimensional space. I also agree with the person beow who said don't worry too much about anatomy yet.
Also look at the angles on the bottom of the feet.
You already have a very nice fluidity and movement in your work which is very pleasing.
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