A man's dress should never be perfect, for that would look too studied as well as too dull. Instead, it should always incorporate some sort of minor flaw, like the formality of the spotted bow tie in the photo next to a tweed suit, that keeps it from perfection.
It is easy for the blog writer to know when he has successfully incorporated a flaw, for he receives feedback letting him know that his ensemble would have been more successful if only he had not paired that satin necktie with an informal suit, or brown suede shoes with his navy worsted.
Feedback may be more difficult to come by for men without a public platform, but incorporating a flaw in one's dress is easier than it may appear on the surface. Just bend a rule. Wear knitwear under a suit jacket instead of a vest, or Norwegian slip-on shoes with a suit (any airline flight provides the perfect excuse for that one).
Always be flawed.