The first time Carly Beth takes off the mask, it falls to the floor, but it suddenly jumps back up to her hands when she tosses it to Noah.
Although the mask is supposed to be attached to Carly Beth's skin, the neck of the mask can be seen poking out of her shirt at several points in the episode.
When Carly Beth drops the sculpted head to choke Sabrina, a crew member's hand can be seen reaching out to grab the head in the last two frames of the shot.
Carly Beth's mother mentioned the plaster head can break easily. While Carly Beth is wearing the mask, she throws a stick with the head on top to the ground. Afterwards, she picks up the head completely unharmed when it should have been broken. Towards the end, she uses the head to scare off the other masks so she could get her real face back, when in fact the head should be broken and Carly Beth would have been stuck wearing the mask as her face.