A great way to easily decorate cupcakes or cakes is to use marshmallows. Now that summer is almost here, you can just use any leftovers from S'mores!
All you need to do is take a regular sized marshmallow and cut it in half, so each half is a circular shape.
Then, lay 5 halves on your cake or cupcake in a circle, use some icing for the center of the flower, and you have a marshmallow flower! When you place your marshmallow halves down, put them sticky side up so that you can sprinkle colored sugar onto the flower and it will easily stick.
For a cupcake, you can do one flower per cupcake, but for a regular cake you can make many more flowers! You can also use mini marshmallows instead of regular sized ones to make mini flowers, like in the picture.