When Troy arrives with peppermint lattes for everyone at rehearsals, the lid color changes from the outdoor shot (black) to the indoor dialogue (white)
When the power goes out in Georgia's house, the shot of the exterior of the house still shows the exterior lights illuminated.
It's a blizzard outside. Nobody can leave. But when the outside is shown, the sidewalk and driveway are completely clear of snow.
Early in the movie, while Georgia riding her horse, her hair is in a long braid over her shoulder. Her hair elsewhere in the movie is not nearly long enough for such a long braid.