I do this type of drawing with high school students, but use a student
model. The students draw with crayons, each person using a different color.
We form a circle around the model and draw until a timer indicates to stop.
I then instruct them to leave their work and move three chairs to the right.
We draw for another 4-5 minutes, correcting if need be, and continuing the
drawing. I have them move a second time and complete the drawing two spaces
to their right.
Each person signs the work, so you can tell by the color who did what.
We critique these, and return each drawing to the person who started it. It
is an excellent drawing method that was given to me in a workshop several