So this one has several classroom applications.
1. You can do a recording of a description of two people and get your students to draw in the faces.
2. You can handout the poster get them to draw their ideas and then get them to talk about the differences in their drawings.
3. you can get the students to write a description on a piece of paper put them into a box. students draw out a description and make the poster. The students then try to find who drew their description.
These are just three of the ways to use this poster and I am sure there are many more. (when you think of them drop me a line in the comments section)