Mixed media: Torn-paper-croquis:
Read on for a brief explanation.
This photo is from a group croquis session. These are 16 pieces of black paper torn by hand after a live model. The setup was like a normal croquis session, except that for this part of the session we did not use pencil, only paper. The paper was torn by hand, the sitting (here: standing) was 5 minutes.
These were made by 16 different artists at the same time, and observing the same model posture/pose (although from different angles). My version is the smallest one, slightly below the centre of the photo. (Disclaimer: I had tried this before).