What is the most efficient way to adjust the headlights on an Audi A4?

I recently bought an Audi A4 and I noticed that the headlights seem to be pointed at a strange angle. How can I adjust them for optimal alignment without causing any damage to the car?

First, park the car on a flat surface about 10 feet away from a wall. Use a measuring tape to mark the height of the headlights on the wall. Then, locate the headlight adjustment screws near the headlights and use a Phillips head screwdriver to adjust the horizontal and vertical alignment of the headlights. It may take some trial and error, but keep adjusting until the beams are aligned with the marks on the wall.