How can I adjust the headlights on an Audi A2?

I have noticed that my Audi A2's headlights seem to be shining too high or too low. How can I adjust the headlights to make sure they are properly aligned?

To adjust the headlights on an Audi A2, locate the adjuster screw on the back of each headlight. Using a Phillips head screwdriver, turn the screw clockwise to raise the beam and counterclockwise to lower it. Make sure to park your car on a level surface and aim the headlights at a wall or garage door to properly align them.