I did some more Draw a Box exercises and I finally realized how to use the process of constructional drawing!
After that drawing these pictures was a blast!
Discussion
what is draw a box exercise?
It is part of a free curriculum called Draw A Box which teaches the foundations of "how to draw". It does this by teaching mark making, spacial reasoning and construction. It does not teach specifics but will, as I said, lay the foundation so one can make sense of all the other resources out there.
I love the shadows in these first two volumetric drawings