A friend of ours recently got married and I made these mugs for a present. I used mugs from Dollar Tree and pebeo porcelaine paint which is really easy to work with and forgiving. I bought it at Michael's and it has lasted for many projects. You can fix small mistakes with a toothpick or q-tip or big mistakes with water and a paper towel. It's never permanent until you bake it. You let it dry for 24 hrs and then bake it in the oven at 300 degrees for 35 minutes. Use a good quality fine paint brush.