In the episode where Lizzie tells her mom that she wants to become friends with her they go out and do stuff. They go to a clay shop and are making clay pots. Lizze's mom takes her hand with the clay in it and wipes it on Lizzes nose. Sometimes it is between her nose and sometimes it isn't. Obviously they did at least two different takes and used both. It is pretty noticeable if you ask me. Whoops!