Make sure glass is clean where installation is desired. Rubbing alcohol works well.
Remove protective paper layer to expose sticky side of vinyl decal. Place decal as desired, sticky side to surface. Press firmly on all edges to make sure vinyl sticks. The edge of a credit card can be used to carefully press edges down firmly.
Remove the clear layer slowly, making sure the edges of the vinyl don’t lift. If they do begin to lift, just replace the clear layer and again, press firmly.