Preheat oven to 350 degrees F (175 degrees C). Line a muffin tin with paper liners.
Prepare cake mix according to package instructions. Fill each liner 2/3 full with batter.
Bake at 350 degrees F (175 degrees C) for 18 minutes. Cool cupcakes in pan for 5 minutes before removing to a wire rack to cool completely.
First you will use the white buttercream to pipe a smooth flat swirl on each cupcake
Next you will use the red buttercream to pipe 2-4 horizontal stripes on each cupcake (see images for guide)
Finally you will use the green buttercream to pipe the wreath shape along the entire outer surface of the cupcake, then pipe and additional row inside
Decorate the wreath with the themed sprinkles, you can decorate them with as many or as little sprinkles as you like. You can see our images for different ideas