Continuity mistake: When Finch drew in Elliot's book he had gotten from his mother, Nina points to the bottom right corner where she states Woody Woodpecker has an erection. Then Finch flips the top right corner opposite where they first pointed.
Visible crew/equipment: When Elliot first walks into Maya's office to find her in there with a crying Nina, a boom mic drops into view. (00:12:51)