Continuity mistake: Miley has to hide all of the newspapers under her sofa, because they have the bad Hannah headlines on them. We see a lot of the papers fall out from under the sofa, but when Lily comes in, the papers that fell on the floor are gone.
Continuity mistake: When Lilly discovers that she has been invited to Kelly Clarkson's party, she runs outside and begins dancing. At this point, you can see that both doors are open, but when Miley says "Look!", the close-up of Lilly has only one door open.