I got this in the mail!  I love how it looks like there are tons of layers and the post office will love you for it.

The layer of white is a different layer on this card, but it would not have to be with a little more masking.  

She used Pocket Silhouettes and did stamp a flower on the inside and back.

I think the colors are Mossy Meadow and Pacific Point, with another lighter blue.  If you don't have repositionable tape (which I highly recommend) use scrap paper!  Try a close pin on your sponge so your fingers don't get messy also.