Give your vehicle a regular wash and rinse before claying. You can leave the surface wet to clay, but make sure there is no soap on the surface because it can deteriorate clay. Test the debris level of your surface with a plastic bag and lubricant. Spray your surface with lubricant and glide the plastic bag over the surface with your fingers inside of it. You will be able to feel the level of debris by the smoothness (or roughness) of the paint. Spray your surface with https://www.detailking.com/products/clay-bar-lubricant wonder lube link Wonder Lube Clay Lubricant to ease the scrubbing process. Roll your Light Duty Clay Bar into a ball and flatten. Using a back and forth snaking motion, gently rub the clay onto your paint. Avoid working in circular motions to avoid marring. When your clay bar gets dirty, refold and flatten. Once you are done, rinse off with water and test your surface for smoothness.