Phil leans Myron against the lockers and Myron's arms hang loose. Just before Miss Winston arrives, Myron's arms are folded. Then when she does enter the scene, Myron's arms are back by his side.
As Miss Winston walks away from Myron and Phil, Myron's sunglasses aren't on straight - the frame doesn't go over his ear. Yet when the close-up of Myron appears, the frame is correctly worn over the ear.
When Myron is leaning on the locker, Phil's Wizard sticks out of his pocket, even when Ms. Winston is talking to him.