Here's a card I made for 3 challenges, using the magical masking tape technique:
Again, the color of the sea foam doesn't show well on the photo :(, but I can tell you that in real that's the color...
Less Is More #414 - 'Big & Small':
I stamped a big and a small butterflies.
Using the magical masking tape technique, along with the color palette gave the card a very subtle look, and I really love it!