Download our PDF, and print on thick white paper, more flexible than card stock. Since the banner should print on tabloid-size paper (11 by 17 inches), your home printer may not handle that size. If that's the case, transfer the file to a thumb drive or a CD, and take it, and your paper, to an office center to be printed.
Use a craft knife and a metal straightedge to cut out the banner, cutting just inside the lines. Curl the ends around your finger, and create a slight curve in the middle as well. Slip it into the wires of the cage.