For assignment B2.
Face shapes are mentioned in the first lesson text Preparation for Makeup Application on pages 42 through 46. It takes you through the different types of face (oval, round, square, etc.) and discusses how to bring out the best elements of each face type through contouring and highlighting.
Heres a few link that might help:
https://www.birchbox.com/magazine/video ... face-shape
http://www.allure.com/beauty-trends/blo ... ace-s.html