While stabbing Carrie Stevens in the back, there is a brief scene in the sequence where Priscilla Barnes doesn't have the knife in her hand. Instead she was just squeezing her hand grip without the knife, pretending she's holding the knife.
During the neck snapping scene of Heather Tindell, the masked killer rips off her bra to reveal her breasts. But after that, in a brief shot she is seen wearing a white strapless dress underneath, covering her breasts which suggest her clothes were not ripped off in the first place.