I have used a sheet of white parchment paper over my card base that I've had in my stash forever. In my 1st trial I had embossed the parchment paper but it was just to fine to handle the embossing.
My 2nd new technique is my butterflies. I must say I am quite pleased with the outcome and they were super easy to make. I found the technique in the lates issue of Paper Crafts Stamp It Cards. My butterfly stamps are from the Lockhart Stamp Co (love their stamps) and were 1st water marked on a transparency and then embossed with Sea Foam White embossing power. I then attached my transparencies to a sheet of very pale blue parchment paper (that came with the white I've had for years!) and cut them out. They give the card just the right amount of pop, I think.