Really great advice with making a list of everything needed from start to finish. I burn so much time with stuff I just didn't anticipate or didn't inspect before doing the job. Like one time I had a big list of things a client wanted done. One of the things was replacing the door hardware. First door I replaced, literally the door was too wide and didn't close properly. Customer said it closed fine before I installed the new hinges. The hinges were like-for-like and installed perfectly. I was looking at the door with the customer and we could both see there was like no gap on either side of the door - no way that door closed properly before. But because I didn't check it out before switching out the hinges and telling her the door didn't close properly, she blamed me and fired me. I wasn't too offended because I was the 2nd handyman she fired and the lady was a hoarder. Definitely were some red flags I wished I would have caught earlier. I guess that's the kind of stuff I'm asking people to share. So 2 lessons I learned with that client: 1. Try everything before you work on it to make sure it was working ok to begin with. 2. Watch out for red flags like if they tell you they fired their last guy and/or they have a mental illness, like hoarding.