For an effortlessly neat outfit, consider teaming a beige houndstooth wool blazer with a dark green cardigan — these pieces go beautifully together. Want to dial it down with shoes? Introduce a pair of brown suede desert boots to the equation for the day. If it's one of those bleak autumn days, what better to cheer it up than a dapper outfit like this one? Take cues from combinations like this if it's time to add seriousness to your style.