You have it. If your trumpet is shiney or close to shiney USE THE CLOTH JTR (sorry, Star Wars). If the trumpet is new, oil the pistons every time you use the trumpet. If your trumpet is new - wash it once a week for a month, then once a month, then once a school term - that's your pattern. As you get the hang of it, you will know when and what to do. Wash and oil a lot when new - this gets all the manufacturing and run-in clag out of your trumpet.