This article will explain some best practices for using the Cyclo polisher.
What really ruins a polish job is getting crust in gaps. Avoid the edges of the panel and anywhere the panel meets trim. Stay about an inch away from these spots. You also want to avoid jamming your polisher where it just doesn't fit. Stay away from sharp angles and the tight spot behind the side mirror.
Apply a dab of Eazy Compound of about 2 inches long to polish roughly 2 square feet.
Polish from left to right and up to down. Polish the door, then wipe with microfiber towel.