The most obvious error present in literally everybody's practice was rushing.
By rushing, you fail to feel.
An exercise like monkey paws is so utterly simplistic, yet watching the class, I saw it devolve into something worthless.
Instead of maintaining range/proximity, staying sticky, turning the waist distinctly left or right, rolling the arms... it becomes an arm rotating exercise, featuring token waist joggles.
Monkey paws can teach you how to effortlessly evade close contact strikes, chin na and grapples.
But only if you slow down and observe the features of the drill.
Apply these insights to every drill you practice.