Continuity mistake: During the horse and buggy ride to the church through downtown New York, when one of the girls is holding the reins by herself, you can tell there is a person under a red blanket at her feet (I guess to protect her while filming in case something goes wrong,) and only a moment later, the same blanket is black.
Other mistake: In the scene where Alyssa's father is in her room, she says "Ms. Kensington seems nice. Does she work with you?" Then she holds on to the bedpost and sort of swings herself around it while looking up at the ceiling with her tongue to one side of her mouth-she probably thought it was just a practice shot. She does the same thing in the scene where she is on the pottery wheel with Diane-she quickly looks up towards the camera.