Dear Sir Frederick,
I had thought I looked quite smart when I stepped out today, dressed in my one-button suit, trilby and elaborate five-point pocket-handkerchief. I met a conglomerate of merchant bankers, however, who informed me that my kerchief was far too formal for the outfit I was wearing. Is this true, have I made an ass of myself?
Yours sincerely,
Mr Donald Reluctance-Camel,
Pneumatic Home Organ, Nessex

Sir Frederick replies: The answer to your query is suprisingly simple, Donald. The fold of one’s pocket square is always guided by the style of one’s shirt. One should aim toward a shape which, if mapped on a two-dimensional plane, would slot exactly into the shirt’s collar: a point collar thus necessitates a long, sharp fold, while a spread or English collar may require a wider, puffier square. For a wing collar, you will need a square which fills all available space outside of the pocket, with just a single, even corner of fabric tucked in. This is a difficult fashion to master, yes, but rules are rules, and we must occasionally sacrifice the economy of a minor continental nation in order to be properly dressed, else the strata of society would be turned upside-down and servants would take up riding their masters like tiny horses.