The explanation of the Grease Pencil concept is detailed, but I feel there's a lack of application examples through exercises. As emphasized in the course introduction, the fact that it's a course with a strong subjective feel, relying on the instructor's personal experience, seems to be both a strength and a weakness. Despite taking the course without any prior knowledge of Grease Pencil, it's regrettable that it feels like it ends at too basic a level.