Bake the cupcakes according to the directions on the box and let cool completely.

Put sprinkles in a zip lock bag - use one bag for each color sprinkles.

Cut the mini marshmallows diagonally and place in plastic bag.  Shake the bag around to cover the sticky side on the marshmallow with the sprinkles.

Frost cupcakes one at a time and then decorate each one (don't frost all of them and then decorate because you need the frosting to not dry)

Take the marshmallow pieces and place them along the edge of the cupcake (see picture) making a circle.  Make another circle with the marshmallows inside the first circle. (We used about 12 full /24 half marshmallows for each cupcake)

For the center of the flower, cut a mini marshmallow in half (not diagonal) and dip the sticky side in yellow sprinkles.  Place in the center of the flower.