First heat up the chocolate in a pot on a stove, make sure to mix often so it doesn't burn. Once all melted fill a cup about 1/3 filled and turn it so it gets covered with the chocolate. I also used a spoon to even coat it. Let it sit in the fridge to cool and repeat the process so the cups is not thin. If you make it too thin it will break. To get the chocolate cup out cut small slits all around the top of the cup[and peel the cup away. We put them back in the fridge until we decided to use them. It wasn't too messy but my kids loved them.
note~ we used scissors to try to make the top even.