Which character? angelfish/starfish (advocated for by angelfish)
What do they want? clothes
Can they supply materials? probably
What are they trading? food/hunting partners/new materials/really she's flexible. just name a price and she'll do it. she'll also do favors. does he want her to shake someone down because she can do it

jesper offered an outfit to angelfish and the only criteria was "what is your favorite color" (blue)

to get an idea of what kinds of outfits she likes, her canon outfits/tastes are one/casual, two/nun habit (with tights), three/aegir clothing

mostly her preferences are like. nun habits (starfish only), skintight/waterproof (probably not possible atm tho alas), frills and lace. though tbqh she'll be happy with whatever he decides to give her. what is his Artistic Vision she wants to know