When Ray and Mick are talking in the hospital waiting area, Mick removes the lid from his coffee cup, the camera angle changes and the lid is back on, then he removes it again.
Mick cuts Granny Minassian's throat and a little blood dribbles out when there should have been at least a heavy flow of blood if not spurting even if he didn't cut the carotid artery. She just drops dead from the wound, which isn't credible.