Yes, I use a lot of cornstarch. I love cornstarch. Do not fear the cornstarch, for it is your friend.
Here are some flowers in varying stages, some tighter and more clustered, some with less rows and more open and loose.
After they are able to hold their own shape, I stick them in styro to finish drying fully, overnight.
This was a test one. Dusted it with poinsettia petal dust, with a tad of impatient pink in the center petals. Then I wiped the center with a small brush with a tad of shortening to give it some shine and take the dusty look off. Then I sprayed edible lacquer over the whole flower. (Got that tip from Rebecca also). The lacquer spray will darken the color so keep that in mind. This center had a bit too much red dust on it for my liking, so I was more careful to keep red dust off of them after this one. (Although just a little bit of red here and there looked pretty good on them!)
Now how in the world are we going to get 60 flowers to stay on a BC cake?