After the first art class a woman in a purple/white short one piece dress and a woman in a striped sweater walk towards the camera. A moment later they are both much further away from the camera leaning against a wall and talking.
Elizabeth lights a kerosene lamp and takes it with her outside after leaving Debbie's room to get her painting. When she goes out into the windy night, the light no longer flickers and when she gets close to the camera you can see an obvious light bulb.
Roberta pours Elizabeth a giant glass of wine when she arrives at school but not enough wine is missing from the bottle to explain the amount in the glass.
At the start of movie, when Elizabeth Sayers is driving around, in one of the shots, you can briefly see the shadow of the boom mic on the hood of the car.