I made these for Mother's Day. Since I couldn't get a styrofoam ball for the center, I used a kids' foam ball and (instead of toothpicks) wooden BBQ skewers. My mom & mom-in-law both thought these were real flowers until they got within 5 feet!
This centerpiece is so beautiful guests may not even realize they are cupcakes! This one was made by www.miabellacupcakes.com but check out http://www.foodnetwork.com/holidays-and-parties/edible-mothers-day-arrangements/pictures/index.html to learn how to make your own beautiful bunch!