The topmost study of K- is 15 minutes, done with charcoal on 18 x 24" cartridge paper. The two below were 20 minutes and 25 minutes respectively. They are on 18 x 24" sheets of Japanese paper, augmented with some 8b graphite afterwards, more on the middle one, less on the lower one.
The composition on the lower one was a bit of a tactical error. I was most interested in the shapes and shadows where her arm and feet met, and started there. I misgauged how high I put them, which meant lots of chair legs and such, but an awkward cropping of her head. With the best of intentions, some drawings will crash on the reefs of awkward placement.
