When Nicky and Alex are doing their Elvis act, their guitars come and go in different shots.
When Nicky and Alex are on stage with Jesse, Jesse throws both twins' scarves offstage and Michelle catches one of them. A few shots later, both the twins have their scarves and then the scarves disappear.
When Dick says he'd like Jesse as a mechanic, waiter or acquaintance, Jesse's hands are raised to chest height. When the camera changes to focus on Jesse, his arms hang at his sides.
Joey says, "Look, there's your cousins Michelle (referring to Debbie and Darla), do you want to wish them good luck before the contest." Debbie and Darla are Becky's cousins kids. Michelle is only related to Jesse's cousins not Becky's. Although any of Becky's relatives can legally be relatives of the Tanners by marriage much like how Becky became D.J., Stephanie and Michelle's aunt when she married their Uncle Jesse.