There was a 20 minute reclining pose, which are always difficult for me. I used a very fine point black pen, 0.05. Drawing with pen adds the challenge of not being able to erase. I did 2 drawings on one page. The first one, at the top, was very tight and I got frustrated. After 15 minutes of struggling, I wiped it out with charcoal and started a second drawing. I just let my eyes wander over the figure, exploring the shapes and ended up with the line drawing at the bottom of the page. I included close-ups of each drawing as well… I was much happier with the freedom of the second drawing.