Continuity mistake: During the scene at the festival, note the guy with the long hair, round sunglasses, and a purple & gold silk indian shirt. 1st seen bottom left corner, when the camera pans to the actor's view. Then watch how many times he shows up. In front of, behind, just about everywhere. In fact on the day of filming, he was awarded 'extra' in most scenes. That was by the film crew, before any editing, and was given Dave Stewart's hat for his trouble. Submittted by the extra himself.
Continuity mistake: Early in the film, Mandy gets a tattoo all down her back. It is very big, noticable and colourful. However when the girls are in the art gallery near the end, just after she fires from her shotgun, she turns her back to the camera and the tattoo is gone.