I wiped the towels first with a damp paper towel to remove the chalk like stuff that can be on them and let it dry. I then used my Batty wheel and wheeled it across my Black Stazon ink pad. Then I used my heat gun to set the ink. I then took my sponge daubers and pastels and colored the tiles using Only Orange, Real Red, Lovely Lilac, Green Galore, and YoYo Yellow colors. I then sprayed them with a clear acrylic sealer made by Krylon. I cut cork for the backs and glued them on. Now I have coasters for part of my gift for a Halloween exchange!