I also find it to be a tricky one - however, it makes sense in my opinion if we consider the central lines (front and back). For the back, we just see half of it, the part until the spine/central line (that we cannot see). Therefore, on your rectangle for the back, you should be able to see half of it. On the front, you can clearly see the central line at the pelvic region, but it then disappears because it is masked by the shoulders. Therefore, the top of your rectangle should cross above the front plane. So I thought it was exaggeration at first, but this is actually accurate. Hope that helps!

Yes 😂 - he made progress with this in the new courses tho!

Thanks both for your comments - I agree: keeping at it is the best way to solve this challenge. I am also following the course Figure Drawing Fundamentals and that helped for the gesture part. Regarding the interesting shapes, I am still struggling with my line quality and the overhand grip - having more control over my lines will allow me to draw small deviations to my CSI lines which will eventually stop looking like random bumps! Hope you have fun with it! :)