When Junie leaves the set to to to the bathroom, she is naked under her robe. When she reaches it, she is wearing panties.
The blood which spurts while Junie is being killed is being sprayed by an off-camera crew member from about waist height, but she is on the floor.
When the killer is beating Junie to death, a crew member is spraying stage blood onto the wall behind him, and the tip of the bottle is momentarily visible.