When applying wallpaper, choose an inconspicuous spot for your starting point. The edge of a door frame is a good choice. This is where the first and last strips of wallcovering in the room will meet, and inevitably, those strips won’t match perfectly. That’s why it’s important to find an inconspicuous spot.
When making repairs or taking apart equipment, be prepared for the occasional dropped part. Clean off a section of your workbench and spread out a smooth shop or dish towel. The towel will keep errant small parts from rolling around on the floor and getting lost. For small jobs, even square shop rags will work; for larger jobs cover the bench with salvaged carpeting.