They were made out of Terracotta.
Pixie cut 1 is by Darxu on Deviant Art
Pixie cut 2 is by Derek Hetrick on Twitter
Mohawk 1 is by Ficeaxx (at least I think that's what the signature says) source is unknown
Mohawk 2 is by Little-Noko on Deviant Art
B. using a geometric pattern in the form of a tessellation
it's a close up of the human eye attempting to capture emotion