Man up! Own up! As soon as you see the mistake or realize there has been a misunderstanding, get it straightened out. Correct it if you can, pay for it if you can’t, apologize, tell your story without making excuses. Then move on. I have broken the frame on a mirror, misfiled a set of papers, misspelled a label (OK, more than once there), put an item where a client couldn’t find it. As soon as the mistake was noticed either by me (the mirror was obvious) or the client (where