We put this above the crib and it wasn't too hard to apply. The stickers come in sections so you need to pay attention to where the letters go from the picture that is included. We also used a level to make sure it was straight. Definetely need two people to help put this up. But if you screw up the sticker comes up easily to reapply. The only complaint I have is that it is sometimes hard to read it in certain light due to the light reflecting off of the stickers.