Facial posing

This is actually a facial rigging video, but it does a good job of showing advanced facial poses.
And I mean, posing is posing right? That's one of the reasons why drawing is so beneficial to animators too.

The video description says: "Dave Gallagher goes over Eyad Hussein's facial rig poses from AnimSchool's Advanced Rigging class. Dave focuses on appealing shapes and directionality."
I could do a half baked job at explaining the above, but you'd be better of watching it, it explains itself. Enjoy!