When Svetlana is meeting the second sugar daddy at The Alibi Room, Kev says he can't hear her speak over her hidden microphone because they never tested it. But in a previous scene, he had her say "Kevin Ball has a sexy voice" into it so he could hear her in the next room.
Between 20:30 to 20:50, Lip takes a drag of his cigarette while writing. But in the next scene, the cigarette is gone although Lip never took the cigarette out of his mouth.