Place Candy melts in a microwave-proof bowl and heat on half-power for 30 seconds. Stir thoroughly and if the candy isn't melted, microwave in 10-second intervals. Stir until smooth.
Use a spoon to dab melted candy into the molds, spelling out your message. Scrape a thin spatula across the top of the mold to remove excess melted candy. Place mold in freezer for at least 30 minutes. Pop letters out and compose your message. Store at room temperature for up to 2 days.