Using these carbon fiber overlays is easy. First, warm up the interior of your car to between 70 - 90 degrees and keep this temperature for at least 30 minutes. Then, clean the area where you'll apply the overlays thoroughly to make sure there's no dirt, debris, or any products like Armor All. Before fully applying them, do a test fit to see how they'll look. Once you're satisfied, remove the backing and press firmly and evenly for 15 seconds. As for maintenance, just use a soft cloth to wipe them clean. Avoid using abrasive cleaners as they might damage the gloss finish. With proper care, these overlays will keep your car looking great for a long time.