How can I replace the headlights on my Audi A4?

I recently noticed that my headlights on my Audi A4 have started flickering and I want to replace them before they completely burn out. Does anyone have any tips or instructions on how to do it?

First, turn off your car and open the hood. Then, locate the plastic headlight cover near the front of your car. Gently twist the headlight cover to remove it. Next, disconnect the wiring harness from the back of the headlight and remove the bulb. Finally, replace the old bulb with the new one and reconnect the wiring harness. Don't forget to test your new headlights before driving.