I thought I had done a pretty good job on this 25-minute pose… until I got home and found that I had drawn the model with a sunken chest. So I made a few changes in Procreate. I tilted her head back a little and brought her back in under her shoulder blades, but most importantly, I changed the curve of her chest from convex to concave. You might say this would make a good “before and after” picture of what happens to a model during a pose, as described by Robert Beverly Hale in his anatomy lectures. She starts, as on the left, upright and vigorous. But time passes and gravity does its work, so that by the end her head is down and her shoulders slump forward.
Ken Crocker Artist 