Think temporary tattoos, but as a sticker!
1) Make sure the spot you want to use the sticker has been wiped down and cleaned to remove excess dirt, etc.
2) Carefully remove the white backing from the sticker.
3) Place your sticker where you want it, and make sure to squeeze out any visible air bubbles.
4) Slowly remove the top translucent piece from your sticker while making sure the sticker stays on your clean surface. Pull at a nearly 180-degree angle away from the sticker instead of just pulling the paper up from the sticker.