When Lucy is playing pool with Spencer, one of her shots have the white ball stopping in front of a corner pocket, but miraculously as the scene is edited and cut, the ball is suddenly near the middle of the table, lined up for the 8 ball in the side pocket.
In the final scene, take a close look at Lucy's glasses. When the camera zooms in, you'll see the lenses are mysteriously absent. But as the camera pulls back, the lenses magically reappear in their rightful place.
It seems the production team struggled to distinguish between holly and mistletoe. You'll spot holly with red berries adorning spots meant for mistletoe with white berries in some key scenes of the movie.
There is no glass in Lucy's spectacles.