PS. I have just found a similar card on Pinterest and the link is here:
It is created by cutting a 'mask' from scrap paper, using the large leaflet framelet. Inside the mask, you stamp a tree from Sheltering Tree. And then have fun spongeing the colours inside the leaf! This is similar to the card I saw online, which may have come from the SU itself. You end up with a one-layer card, with lots of depth - of course I added layers beneath to show off the beautiful colours:)
Now the next one, is my own invention, copying the same process. I've used a large butterfly die to create the mask, and inside I stamped a Medallion by Stampin' Up! I used aqua, purple and pinks for the butterfly colours to make a different look.