Take the paper plate and carefully write your secret message with the white crayon. Make sure to carefully trace your letters a few times to get lots of the crayon wax deposited onto the paper plate.
Next paint the paper plate with water based paints. The whole premise here is that the water based paint will not stick to the waxy crayon leaving your message intact even when you paint right over it.
Once dry decorate with trim around the edge of the plate.
