Wow, you can clearly see the progress between one and the other! Congratz!
I loved your notes as well (the "End of butt" made me laugh a lot π€£), and even tho simple, I also really liked the way you draw their feet! π
Honestly I think the last one turned out great. And you saw in the video, this exercise is more about getting the hand of proportions than the muscles and volumes, so if you got that out of it, it's great.
I would recommend keeping doing it a few more times tho, to really "tattoo" that in your brain.
Congrats for the good work and keep 'em updates coming!