A guy's biggest style mistake is definitely trying to look too cool. As long as you've got a good pair of jeans, a good pair of boots and a few good shirts, you're fine.
“Every day of my life, I feel fat. It's not correct thinking in the natural, normal human being's way of life.”
“Lord, bless me with the ability to achieve all that I can, and the wisdom to realize it doesn't all have to be by tomorrow!”