I used one of the leaves from the fresh foliage set to create the flower - very easy to do (although I suggest you practice on a scrap to get your eye in and get an idea of the finished size for placement on the card). - basically think of a clock face and stamp a petal to point to each hour.
It seemed to need just a touch more dimension, so I stamped the greeting onto a die cut label and mounted it with puffy tape.
All the supplies for this card are available from my Amuse Studio store
stamps: fresh foliage, essential sentiments
ink: grapefruit, memento tuxedo black
misc: word windows die set, copic multiliner