I didn't know what to expect when I started this course. How detailed or not it would be, and if it would help me see art differently or improve. Now that I finished it, I can say it did help. It's funny that the exercises we had to do for the homework were some I already did due to a book telling me to do the same. I didn't think it would end with the same things I have already been doing. As someone who is just starting to get back into art and trying to get beyond her knowledge and skill, I enjoyed this course.
So here are the two exercises I enjoyed the most and thought I should share.

Sadly, I didn't use my Polychromos for this exercise because it was actually difficult to get this done with the Castel Art ones. Some colours let me do it better than others.

For everyone interested in these kinds of information, I can recommend the book "Art Fundamentals 2nd edition" published by 3dtotal. The course gave me that kind of vibe and included basics of the topics the book explains too.