Tackle a couple of square feet at a time. If you've never used a polisher before, you may want to practice on an old panel before moving to your car. The pad rotates in a clockwise direction, and can easily jump around until you get used to it. Tilting the edge too far can also cause the paint to be burned. Note also the power cable draped over my shoulder, thus saving it from dragging on the paint and causing scratches. Not vital in this case, it's important when color sanding and buffing a new paintjob.