Prepare a baking sheet with waxed paper. In a microwave-safe bowl, place the green candy melts. Heat in the microwave for 30 seconds and stir. Continuing heating in 30-second increments, stirring well after each. If the candy melts overheat or are not smooth enough to pour, add 1 to 2 teaspoons of coconut oil or vegetable shortening and stir well.
With your hand inside the cone, spoon the green over the cone. Tap gently to allow the excess to drip back into the bowl
While the green candy melts are almost dry but still wet, press the candies and sprinkles into the cone.
Place on the prepared baking sheet to dry. When ready, place one cone on each cupcake.