Christian Louboutins and Manolo Blahniks are not technically a dime a dozen, but lately they're so ubiquitous it might seem that way. No one would say the same about the designs of Paris-based up-and-comer Joey McMakin. Exclusive in Boston to upscale women's shop Serenella, the first of only a few American boutiques to carry the label, each of the signature square-toe styles tread fashionable—and unique—ground.