I have seen some beautiful cards posted by ButternutSage Designs... and broke down and sent for the tutorial. These are so much fun and relaxing to make. I've seen this called several things and don't know which it really is. Please do not ask me for how to do the butterflies. Out of respect to the originator of this technique, if you want the instructions, please see ButternutSageDesigns blog.
The layout of this card is CASED from a card by OSCICAT.