Lilly, Do You Want to Know a Secret? - S1-E1
Continuity mistake: In the cafeteria, when Oliver joins Miley and Lilly at the table the food and trays change position, particularly the milk carton. Then when Oliver stands up and announces that Lilly has the two tickets, suddenly the apple has changed trays and the juice box and milk carton are lying flat.
In Too Deep - S1-E23
Continuity mistake: When Ms. Chatham is at Emma's house, she puts her hand on Cleo's arm. It's not there in the next shot. (00:10:35)
Suggested correction: Ms. Chatham's hand is barely visible in the next shot but it's there.
The fact that it's barely visible (as seen in the screenshot) confirms the mistake. It's on her arm and then it's not on it, she's just barely touching.
Bishop73