I just realized I never posted a photo of my July postcard, which had a blue theme. Maybe that's because it wasn't one of my favorites. But it's kinda cool, and in the interest of record-keeping:
I just painted and stamped the background, then printed the raven image onto a transparency and burned its edges with a candle. It wasn't easy to get it fastened down, as the heat made it buckle, but they made it through the mail just fine.