Yes, everyone gets nervous.
If you didn't care, you wouldn't get nervous.
Because you care, you did a great job!
One of the best things about entering in a quilt show is that is can be a great learning experience if you let it. Take every comment from the judges as a helpful hint, whether it is framed that way or not and you will not only have conquered your fear of entering a show, but you will have also learned a lot about your strengths and weaknesses. Good Luck! I know you'll do great!