Your quilt does not qualify for this show. Who would know? You would. Adding a label won't change anything. What if you entered and won? From what you've said, I don't think you would feel good about the win. Look at this as an excellent opportunity to make another quilt.
That said, if this is a local guild's quilt show, call them and ask if the rule is firm. Small guilds don't always think things through before writing their entry forms (don't ask me how I know this).