When I did my hibiscus flowers out of royal icing on a lily nail I did them in foil, removed the foil from the nail and placed on a cookie sheet to dry. I own two sets of the nails, and only needed one size, so I used two lily nails, but if you only have one that will work just fine. It's a bit time consuming and they take a loooooooong time to dry. PM me if you need additional help with these flowers. 
I cover the nail with the no stick foil. After you make it, carefully remove the foil (with the flower on it). I use egg cartons to hold them while they dry. I made 125 petunias, and they all did fine. If possible, use the paperboard egg cartons. If you only have the stryofoam ones, leave them open a bit, or poke holes in the tops.
Hope this help!
I use only one nail and then set mine in egg cartons. I never had a problem ... oh yeah, I use the Wilton precut foil -- normal foil does not work for me (not sure about the non-stick foil). I have not uploaded any of my cakes that used the lily nail ... but I do love to make flowers using the cupped nail -- once you get it down they are SO much fun and you can make all kinds of flowers!
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