Jude Law has a very obvious and pronounced cleft in his chin. The young actor who plays Danny as a child has a perfectly smooth chin. This is particularly glaring when the scene goes from a close up of the boy's face directly to a close up of Jude Law as the adult Danny.
When Anna is born, she is quickly wrapped in a blanket and handed to her mother. As her mother holds her you can see the disposable diaper where the blanket slipped down.
In the scene when Anna runs in and up the stairs, her fiancée and brother (with a cast on his foot) are at the foot of the stairs. They try to stop Anna from going upstairs, and when she still goes up, her brother turns around and it is clearly visible on the back of his cast that it's a slip on (it looks like Velcro might be holding it together).