It's adorable! I would love to receive that in the mail. I did postcards a few years ago using a good quality watercolor paper for the back. It worked great. I bought a book with patterns and it recommended the w/c paper. I mailed a few of them and they got to where they were going. One of the mailed ones went to a postcard art gallery exhibit. It had to be mailed and postmarked. Wouldn't that be a fun guild project?