"Fantasy Flowers" are mentioned in Wilton's book Tiered Cakes in the "Special Techniques" section. I say "mentioned" because the project is accompanied by a scant 3 photographs and a few sentences of text. I think these fancy flowers are a lot of fun (not to mention relatively easy and totally open to personalization), and could definitely benefit from a more thorough set of photos and directions. You'll need a gum paste storage board, large and small heart-shaped cutters, thin purple shaping foam, a container of gum glue adhesive (a pinch of gum paste dissolved in a tablespoon of water), a dusting pouch filled with a 50/50 mix of powdered sugar and cornstarch, small brushes, the ball tool from Wilton's 10-piece Fondant and Gum Paste Tool Set, a 9" fondant roller, stiff consistency royal icing of any color in a bag fitted with a round #3 tip, edible glitter, and gum paste in any color you like (remember, the point of this flower isn't to be botanically accurate!).
Eventually, the small flower can be nestled inside the large one (and held in place with a dab of gum glue). Since the large flower is still drying and holding its shape, I'm going to work with the small one first. First I dusted it with some Disco Dust in Baby Violet.