Two ideas
1) every person has that teacher that is a nightmare. Overly strict, mean, etc. in this challenge they would use kids drawings of their teachers to iinspire over the top terrible teachers. Possibly as a team challenge, one artist would design the teacher, one would design the nightmare child that drove the teacher to what she became.
2) self reflection: the artists have to make the model look like themselves. It would be intestejng to see how self aware they artists are and how they can edit