the sections on facial appearance in Chapters 4, 5, 6, 7, 8, and 9 are practice instructions. Each of those chapters also tells you how to make certain faces, constructing changes in expression so you can better learn how the face works. When you can accurately recognize the faces shown in Chapters 4 through 9, Chapter 10 shows you how to use a new set of faces to practice further and improve your skills.