How did I handle… Drawing Portrait with Live Models

I have made a lot of live model courses and workshops in different countries during the last 20 years. These are some samples of the last live drawing model course I made in Berlin, focusing on portrait. We were using easels, long poses (~10 min.), standing around our model. Our teacher encouraged us to try different media. After a few tries with pencils, I tried chalk. You can see more samples using different techniques in this link: https://www.3dartviz.com/skills/skills-2d/live-portrait-nude-drawing.html