Continuity mistake: When Freddie lies in bed with Mary, she has her head on a sketchbook with the Queen logo drawn on it. The sketchbook keeps changing positions between shots.
Continuity mistake: The first time we see Jackson rehearsing, his brother comes to the first row to talk to him, always with his right arm down. There's a brief shot from a different angle where his arm is suddenly up. Then back to the previous angle where the arm is lowered for the rest of the scene.
Continuity mistake: When Bart's dad asks how he got such a beautiful girl, he looks at Bart. The shot cuts to behind him and suddenly he's looking at Shannon again.