Sometimes I find tips that will be useful down the road...

And I don't know where to put them. So, here's a nice little step by step for trim polishing.

1. With a bodywork punch set, hammer out from the backside any dents (this takes trial and error practice).
2. For any deeper-than-surface scratches, sand them out. Start with 300 grit, then 400, then 600, then 800, then 1000.
3. For any paint overspray, use step 2.
4. Get two Mother's mini power balls. Wet them both with water, and squeeze dry.
5. Insert mini-ball into an angled high-speed die grinder.
6. Apply rubbing compound to the miniball, and and polish the trim . . . it'll get really dirty, so keep adding fresh rubbing compound. You're going to want to use this to remove visible scratches.
7. Wipe clean.
8. Apply polishing compound to the other miniball, and polish the trim, adding new polishing compound as you go.
9. Wipe clean. At this point, you'll have a near-mirror finish. If you want to go balls out, proceed to step 10.
10. Get a cotton flap wheel and jeweler's polishing rouge made for stainless steel / aluminum (depending on what you're working on). Apply the rouge to the cotton wheel; use the cotton wheel to polish the metal to a mirror shine. This part goes very slowly, and is quite time-intensive.

(credit to "R Salesman", on Turbobricks.com)

Also, just a generally good post on bodywork - ...how do I take care of the bodywork?