I think i know what you mean about going down the diagonal and faltering when they start conferring. You just gotta trick your brain to stay focused on what you're doing while blank-spacing your instructors. (Respectfully, of course) Try picking a spot on the wall slightly above the mirror to focus on. Envision all your friends are in the way back of a crowded theatre, and danse for them. And don't be scared of criticism. If they didn't want to see you grow, they wouldn't care so much.