Nobody arrives as an icon; the icon is manufactured, frame by frame. ’Becoming Marilyn’ at Staley-Wise lays the machinery bare — Avedon, Halsman, Bert Stern and a dozen others catching the seam between a person and the persona built on top of her. That question of how identity gets assembled ripples downtown: ’Trade Winds’ gathers a diaspora of makers reworking inherited images of self, and Perrotin’s Orchard Street rooms stage invented worlds with a wink. The route runs SoHo to the Lower East Side and keeps asking the same thing — where does the real face end and the made one begin?