I love how you are able to understand the volume in the sphere, I can see that in the way you curve inwards towards the end. I would recommend practicing on your line confidence, try practicing what line you want to make before setting it down on the page. I see many lines around the circle alone. Give it a go, you're doing great.

It's great that you are well aware of perspective. In your first couple of drawings I can see the perspective is off for many of the drawings. Trying drawing in a simple perspective grid so you know where your lines need to head. You'll eventually get use to it will rely less on the grid. Good luck.

You're doing an amazing job showing the squash and stretch in your drawings. I can really see you emphasizing that. I would recommend also focusing on bodies with a twist, just to really understand the S curve in the body, as well as showing off cross contours to show the volume of the torso and the hips/pelvis. I see a couple of your beans show the use of foreshortening and I understand it's not covered much in depth in the lesson, but keep the perspective in mind when you come across it. Don't be afraid to try it out, you're doing so well and the improvement is showing.

Awesome to see you were improving as you kept drawing. First, practice drawing circles and ellipses from your elbow and shoulder. These will haunt you for the rest of your drawing life, I promise. Fill sketch books. Try not to use your wrist. Make sure you can see them as spheres by adding cross sections. I see you already started doing that in your later drawings. The masses representing the torso and hips should not be too far apart from each other. Try adding more S curves in the mix for the spine along with the pinch. Good job!