All the silhouettes - trees, animals, sugar skulls etc. have welded brackets on the back. These brackets stick out about 1/2". The result is your piece of art will sit off the wall and cast beautiful shadows behind it. The brackets also have a key-hole shape cut into it so that the wind or someone bumping it can't slide it off the screw head. Mini Hearts do not have brackets to hang. Use two nails or screws to create your desired angle.