Thank you for posting this class - I have done a fair amount of drawing practice but drapery folds were new to me, so I’ve started using a draped towel as a way to practice ‘soft-hatching’ and tonal shading. I’ll also take your class on Da Vinci ‘s contour lines in the future.
I used this project to tune up my eye for tonality and help me continue with a stippling project on toned paper that had stalled - still more work to do but I am, slowly, getting back to work on it.