I used star candies I found at Party City and pearl sprinkles I found at Target (it was the cheapest I found).
Ice the top of a cupcake. Get some green icing and place it in a pastry bag fitted with a star tip. The bigger the star tip.. the better.
Start a big circle.
Then swirl on top of the circle but pipe smaller circles as you go up.
Add pearl sprinkles.
Take a long star candy (or any other star candy you can find) and measure it so that the stick will go all the way to the bottom of the cupcake (the candy is top-heavy and needs something to support its weight).