'ello guys. I'm looking for learing material that'd help me understand how to use lines better. stuff like, how to describe volume without rendering.
I've drawn these two figs from reference in the /beg/ thread, and I think they turned out fine, but... like, I know more or less what shapes the body's made up of, but often I can't intuit which lines to put down, where to use hatching, where to omit them. besides contours.