The 11x17 was first. The white paper is from Amazon, while everything else is from my years-old stash of cardstock. I used bleach in a little spritzer to create the splatter effect on the paper behind the letters (it was solid dark green). Since most of my paper is 12x12 at largest, I experimented with a little creative piecing together for the colored portions to make a single 11x17 sheet.
Honestly it was the result of laziness. I was going to use dilute watercolor on the white paper, but the spritzer already had the bleach in it so I just went with it.
Nice to hear! I’m planning on making these part of a product line (just ordered a boatload of large-format fancy papers) that I hope to sell in some of the local Judaica shops. Totally not at all what I planned on when I bought the laser, but here’s hoping at least one shop owner bites.