The blue-and-white card kinda reminded me of Victoria Magazine’s annual blue and white issue. I found the iris-folding technique directions here and using a template from another craft, I made my own blue and white version.
Then to switch gears, I tried it in another color. Instead of using the holographic paper for the opening in the back as the website suggested, I made the opening big enough to receive a teabag envie and taped it into position. I had to squish the cards with a couple of heavy books to get them a little flatter to mail.