The artistic aspects of Grease Pencil are referenced in many overseas YouTube channels. Without a basic understanding, I often didn't know why they were doing things that way, or why I was getting errors. This course explains the basic concepts of Grease Pencil in a detailed and clear manner. The instructor's know-how, gained through long consideration and analysis, anticipates areas where problems are likely to occur. The lecture is clear with good diction and a flowing explanation. This course is a rare basic textbook for Grease Pencil, and it is precious because I can listen to it in Korean. If I succeed as an artist in the future, I would definitely like to send a gift. Thank you.