Size matters on FAA. You need to offer the largest, highest quality work you can. Out of my meager sales, only two have been the size you are offering. Well, three, but I bought one of them. Most of mine are 16X20 and bigger. The copyright notices on your work likely will not be printed by FAA even if they sell.
To answer your question, FAA works pretty well for us and they typically will e-mail you when you make a sale. However, if the printer won't print it, you'll get another e-mail.