30-second flipped expression warm-up

Done as part of a practice session with poses of 30 seconds in length. My current goal is: Make my forces of faces and expressions less stiffest and more dynamic,energetic, and fluid. Here is my latest flipped warm-up sketch. My current goal is a work-in-progress, but what the hey? There is at least SOME room for improvement! I'd really sketched it faster and funnier. What do you think? Is it drawn least stiffest, and the most faster and funnier enough?? Is it still drawn more dynamic, energetic, and fluider???