This is a contemporary way to complement your home or business interior design. And it's funny for users. Self-adhesive, water resistant, and removable, suitable for most flat smooth surfaces without leaving residue, however, a pre-test is highly recommended. Decals can be cut into smaller Green Board or multiple decals can be combined to create a giant Contact paper. Application Instructions: 1. Choose a smooth surface that is clean and free from dust and moisture. You may wear damp clothes clean thoroughly the applying smooth surface. 2. Peel off the backing paper from a corner, stick to the desired surface, and use a soft cloth to squeeze out the air bubbles while peeling off the paper.