Thanks for the response. This tutorial is too difficult for a beginner; I’m stuck with the boolean part. I spend hours trying to clean my mesh, but I hate booleans so much. I’m disappointed because I’m searching for a beginner’s course, and Headpot is sometimes not entirely for beginners. I’m a bit angry to begin a course and be stuck after 10 hours of hard work. I’m afraid now to reproduce this mistake. Please make sure that when a person filters courses by beginner level, they won’t fall into a trap. I’m at the point of wondering if I should buy the courses one by one on Blender Market or go for the free tutorials.