You make a very brave decision to step into the world of competition. You have received a lot of very good advise from other quilters. Since you did not receive any comments about the quilt itself, then take that as a compliment that you are right on target in that area and concentrate on the binding aspect. I just started quilting and from what I understand the binding is the first thing most judges zero in on first. However having said that I also know that each judge is an individual with their own biases and opinions. Each judge will judge differently. That's the world of competition. Don't get down on yourself. Be proud of the quilt. Next time you will be better prepared. Good luck. You have a blue ribbon to win next year so get sewing.