I drew the design on a piece of paper, then laid a plastic lid on top. (This one is from a deli container I saved.) With an X-acto knife, I cut through the plastic, tracing along the design underneath. A tip: you'll never be able to cut the shapes out in one pass. Make many cuts on top of each other until you break through.
Lay the stencil on top of your mug and sprinkle with cinnamon or cocoa. Dust the powder through a sieve or strainer to make a very fine layer.
Since cutting your own stencil is a bit of a pain, you could also get some from Amazon or CoffeeStencil.com. And if you totally dig stenciling, don't neglect your cakes and cupcakes!
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