Tip for July 2010:
Contest Mistake #2: Three Wheelin'

One of the quickest ways to get points knocked off your model at a show is to have daylight visible under one of the tires. Unless it's a lowrider in a three-wheel pose, all four tires should be solidly on the ground. The easiest way to ensure that your model is sitting flat is to glue on three of the wheels, place the car on a flat surface (like a mirror), then glue the fourth wheel on so that you can adjust it vertically.