Fine Cut Cleaner is a good choice if the paint surface does not have heavy swirl marks or bad oxidation. If the paint is oxidized or have a lot of surface marks, you will need to first use a light rubbing compound, such as 3M Perfect-It Paste. Work on one area at a time covering 2 to 4 square feet. Buff off residues as you go. This allows you to discover any problems early before polishing the entire car.
Most polishes apply best with a cotton terry cloth or terry applicator pad.
Work in a shaded area, out of direct sunlight. If the polishing residue does not buff off easily, switch to a clean wipe towel. If you are creating swirls, you are using a polish that is too abrasive, or you have grit on your applicator or wipe towel. After polishing, your car's surface should be squeaky clean, smooth, and free of streaks and minor swirls.