Hold the decals for about 3 minutes under a lamp to activate the decals prior to installation. Prepare any flat, clean (without dust) and non-textured surface. Peel & stick it anywhere you want. Turn off the light & enjoy the magic.The glow in the dark stars and full moon includes 220 brilliant Flourescent stars in 4 different sizes and an affirmation card to encourage your child to never give up on their Dreams and foster healthy relationships!.Set contains: 220 removable stars: 25 stars, each 1.4 inch 90 stars, each 1 inch 105 stars, each 0.8 inch 1 moon, 9.6" /25 cm affirmation card.