I was able to draw and sculpt for 5 days with a designer and sculptor that I've looked up too since I started school many years ago. We spent 2 days drawing and refining our character, and then three days sculpting.
Here are some shots I took from the workshop, process of the creature I worked on as well as others.
With Carlos, at the end of the workshop
The anatomy legend, Andrew Cawrse
Final Sculpt (although unfinished sculpt)