Jules - Putting up a measuring rule decal from IKEA

here are some of the process photos:

The pack of wall stickers come in 3 parts to stick onto the wall.

1. First decide on a wall where you intend to put the sticker. 
2. Clean the surface with a wet cloth. 
3. Remove the sticker from the backing.
4. Use a pencil to mark 30cm from the floor up.
5. Stick the first piece of sticker at 30cm with reference to your pencil mark and continue to stick the other 2 stickers as you go along.