1. Take a piece of plain white paper.
2. Dip a cotton bud into a glass of milk
3. Write your message on the paper with the milk dipped cotton bud.
4. Wait for the milk to dry on the paper.
5. Either ask an adult or get the help from an adult to iron the piece of paper. You should place a tea towel over the paper before ironing. This is very important.
6. Your message will now be revealed.