I appreciate the critique! Thanks for pointing out my misguided fear about extreme angles, I think I needed that reminder to focus on the basics during the learning phase.

Is it also alright for me to ask a follow-up question? For your second point on things to keep an eye on, can you give an example of contour lines that don't really contribute to the construction itself? I mainly tried to use contour lines to reinforce the direction in which a form is wrapping around the torso or head (mostly to convince myself of their three-dimensionality), but maybe there were cases where I was excessive or not using contours correctly. I'm not sure if I fully understand what I'm doing wrong on this point.