This is the end result. Keep reading for the tutorial.
You will need: Interior paint (pink, orange and white), paint brush, tape
Start taping the shelf. Tape the front in a Union Jack shape and continue the design onto the top.
Start painting the pink stripes. Let dry and attach the tape in 1cm distance from the pink, so that you can then paint the orange color.
You can correct little errors with the white paint.
Dont forget to paint the sides as well.