Using these 3D simulation wood door wall stickers is a breeze. First, make sure the surface (like glass, metal, or a dust - free wall or door) is clean and dry. Then, peel off the backing paper from the sticker and carefully place it on the surface. Smooth out any air bubbles as you go. Remember, these stickers are only suitable for smooth surfaces. If you want to remove the stickers, do it slowly to avoid any damage to the surface. To keep them looking great, you can gently wipe them with a damp cloth. Don't use any harsh chemicals or abrasive materials on them. That's all you need to know to enjoy your beautiful new wall decor!