These drawings were made upside down in quadrants. The purpose, as I understood it, was to train us to look at what’s there and really focus on the relationships of the lines.
The first study was a copy of Egon Schiele’s “Seated Woman” 1917. It looked good to me until I flipped it. Everything was generally right, except the face.
The second study was a copy of Picasso’s “Portrait of Igor” 1920.