Using this 3D wall sticker is easy. First, clean the wall surface where you want to stick it to make sure it's dry and dust - free. Then, peel off the backing paper from the sticker slowly and carefully, and stick it on the wall starting from one corner, smoothing it out as you go to avoid air bubbles. When it comes to maintenance, just use a soft, dry cloth to wipe off any dust. Avoid using abrasive cleaners or sharp objects that could scratch the sticker. Also, try to keep it away from direct sunlight for long periods to prevent color fading.