Clean, repair, and hand over the keys. Leave on good terms (and richer).
Patch nail holes. Clean the oven. Forward your mail. Take photos of the empty apartment. Return ALL keys.
Print. Check off. Get paid.
Use spackle for small nail holes. You don't usually need to paint if they are tiny.
Don't shut them off too early. Keep them on until the day AFTER you hand over keys.
Essential. If a landlord claims you left a mess, photos are your proof you didn't.
Return ALL copies. If you lost one, tell them. They may charge to re-key.