rustbucket82 added a post in a topic Building for your 1st Big model show HELP
When building for competion, don't throw every little aftermarket part you find at the model, it will not help you.
#1 thing to remember is the basics.
Seam lines removed
all 4 tires on the ground
glass is free of defects.
The list goes on, but just some advice, If you are building just to try to win something, you're building for the wrong reasons. Good luck and have fun.