When I entered my blueberry summer ale in a competition, I wasn't sure what to put it in, since for a fruit beer you need a base style, I picked the wrong style when I entered it and I scored a collective 25 on it, all the judges stated that it was a fantastic tasting beer but that it just did not fit the base style I had it listed as and that it would have scored MUCH higher if it were correctly entered.
I scored a 25 with a great beer because I had an incorrect base style listed, the thing to remember is that judging is meant to pick out flaws and off flavors for that particular style, it is just a way to test your skill by brewing a set of style guidelines and doing it as perfectly as possible, it really has nothing to do with whether it is a great tasting beer or not.
My first competition I was hoping to get a great score, like the judges would take a sip and go into a similar rave like Ralphie's teacher (in his day dream) in 'a Christmas Story'
It turned out that it was not quite to style and I was given feedback as to why it was dinged, I learned a bit once I got over my hurt pride.
You will do better, just remember it is all about style guidelines, some of the best beers I have ever had, both homebrewed and commercial would score poorly in a comp because they were brewed to be great drinking beers, not to fit in a category.