26-Second Light Face Practice Sketch

Done as part of a practice session with poses of 26 seconds in length.

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

Last night, I did this practice sketch of my caricature of one of those models here in Line of Action. You can tell by how loosest and how freest my line quality and control are. Please comment and share. Thanks for not critiquing this sketch.