First clean off your new mugs and let them dry. The take a look on Pinterest, etsy, or where ever else you pick your craftiness from and start designing! Let the mugs dry for about 8 hours before baking. (I usually design them at night and then bake them in the morning when I get up.) Place the cups in a cool oven. Once m the cups are arranged, turn the oven on to 375 F. Once the oven is preheated turn a timer on for 40 minutes. Once the time is up, turn the oven off and let the cups cool down inside the oven (from start to finish I usually leave them in the fore about 2-3 hours) once they are room temperature again you are ready for gifting! Have fun!