Concept "Weight" in Figure Drawing Class (GPC)

I sketched out the figure of the model here using mostly vertical and horizontal lines and finding distance relationships among different parts of the figure. I then loosely located key values in the form so that I would have it to work with later on after class ended. In the cafeteria, I sat and drew in the mechanical elements from my imagination. The parts I imagined were inspired to some degree by the anatomy of the model so they conform better.
Graphite, neocolor, 18"*24"