This is just my personal observation not really a question:
You mentioned in the podcast about there being many other online art courses. I signed up for the free emails on several sights, spent 3-4 months checking out different sites. I kept running into the same issue: the instructions had me copying a drawing but when I finished I hadn’t learned a skill to apply to a piece of art I wanted to do. I only knew how to copy what they had showed me. I had the same experience with just trying to learn on my own thru youtube. I was being taught to copy not develop a useful skill to duplicate. One of your free samples had a skill I was able to 1-understand 2-apply on more than one piece. So your online course really offered me something unique I wasn’t finding with other sites.