This combination of a navy blazer and a long sleeve shirt will cement your expertise in men's fashion. Rounding off with a pair of dark brown suede derby shoes is a guaranteed way to add a bit of fanciness to this outfit. When temps are starting to drop and autumn is in the air, you'll appreciate how ideal this look is for transitional weather. If you're an adolescent boy, pay attention to combinations like this to add more seriousness to your look.