-Please Note :
-Please note that it`s very possible the free chalks could come in broken because of shipping
but they`re still very usable smile 
- Some wall paints are designed to resist stickers， please check before purchasing.
- It`s recommended to clean the wall leaving no dust and dirt before applying the stickers onto your wall
- We strongly suggest having 2 persons to Stick the stickers
- Please don`t use it on freshly painted walls
- As you`re applying the sticker， use a towel to wipe & squeeze bubbles underneath the stickers
- The texture of the wall sticker is smooth (not like a rough surface like normal classroom blackboard!)
- The chalk on the board is best to be wipe off by a damp cleaning cloth， write when board is dry.