You won't be able to dismiss this by usual means (escape or click button), but you can close it programatically based on user choices or actions.
"I matched the return address to the card and they came out lovely. I upgraded to a color on the CMYK scheme. These came out slightly lighter in color then the card, and a little larger then I had expected, but other then that I love it and they are perfect. If you have a small card, you will need to put this label on the back envelope."