I made a set of six mugs with two different patterns.
Glass Mugs (I used these
and they are the perfect size. They really feel substantial in your hand), washed and dried
Exacto Knife (use a new blade)
Butterbeer emblems (download below)
You can use the two Butterbeer emblems I made, or easily make your own. For my mugs each image had to be 3" wide. Print out your labels on normal printer paper. I will be switching between patterns in the instructions, but the process is exactly the same for both labels.