This is my decorated envelope which I will enter for the challenge:
I started by masking a border around the envelope and masking out an oval for the address. The stamps used are Cardio Majestix Emily's Garden, a lovely set of miniature flowers, foliage and a butterfly. Starting with the larger flower I stamped the flowers with Adirondak Stonewashed dye ink, first, second and third generation stamping. Then added the smaller flower in Memento Paris Dusk. The leaves and foliage are stamped with Memento New Sprout and Olive Grove and then the masks removed.
The butterflies are added last after stamping the Daisy Post stamp which is a very old one from my stash by Stampendous, I used to use that a lot so it was nice to re-discover it for this little project. I guess I should make a matching card to go in it ..... I might just do that.