Like Anthony said, and it especially applys for a newer car like yours, cleanliness matters. Most New Beetles are going to be sporting the factory paint . . . and most factory paint jobs are created equal. Think about it . . . computer mixed paint sprayed by digitally controled robots in hi-tech climate controled paint booths . . . all geared at giving each and every car the exacty same high quality paint job. When they have everything right, you have cars rolling off the line every few second with paint jobs that really can't be matched by even the best craftsman. So what makes one of those a "8" and one a "15?" Everything else being equal, the cleanest one will get the highest score. Attention to detail is key too. The guy next to you has dried crusted wax in a couple of seams . . . you took the extra time to make sure yours doesn't and you'll get the better score.
Just adding accessories to make the car different doesn't always help . . . If you add window tint film and it's wrinkled and full of air bubbles, your better off not adding it. Add some cool looking and very functional custom gauges, but do a sloppy job with their wiring, again, you're probably better off without them. What I look for when I judge (not that I do it a lot, and I'm by no means an expert, but . . . ) is quality of workmanship. I might not really "approve" of the funky two two tone pearlesant (sp?) paint on a car, but it if it's a quality job and it's clean and detailed, I'm going to score it higher that the car next to it painted my favorite color that has overspray on some of the trim or seals and a small run here and there.
The bottom line though is that every VW show I've every attended, the judging really boils down to someone's opinion. You know what they say about opinions . . . they are like a certian part of the human anatomy . . . everyone has one and at one time or another, they all stink.
So, clean, detail, look for ways to make it stand out . . . but above all, enjoy the company! After all, most VW shows are not only about the cars, they are about the people. It comes with the name Volkswagen. The People's Car.
:cool: