30-Second Grayscale Face Warm-Up

Done as part of a practice session with poses of 30 seconds in length.

My current goal is: Improve my understanding of the forces of the facial skull, in terms of my facial anatomy.

Here is my latest and newest face grayscale warm-up, all in 3 or 4 different colors. I'm still making greater progress on my facial skull's forces. What do you think and feel?