The trick is using removable adhesive between 3 layers of Whisper White and stamp them all together, as if they are one piece. Then when you pull them apart, you get this wonderful look. There's lots of variations out there now. You can also stamp another flower and cut it out to adhere here to add even more dimension.
My Supplies List (all supplies and images by Stampin' Up! unless otherwise noted):
Stamp Set(s): Everything Eleanor, Blooming with Kindness (sentiment)
Ink: Crumb Cake, Soft Suede, Riding Hood Red
Papers: Early Espresso
Accessories: Riding Hood Red Taffeta ribbon