How to use: Step 1: Choose a smooth, clean and dry surface. Step 2: Peel and stick the sticker one by one. Recommendation: Don't stick on walls that have peeling paint, holes, or uneven surfaces. Tips: Use your hand to smooth out any air bubbles by pressing from the middle and slowly moving outward. If they aren't sticking firmly, use credit card or similar item to smooth out the surface of the decal.