“I grew up going to pow-wows and stuff” isn’t the first thing you expect Annie Lenon to say as she’s puttering around the garden apartment and studio she shares with her boyfriend in a brownstone in Brooklyn’s Fort Greene. But then you recall that the 25-year-old jewelry-maker and Pratt grad hails from Bozeman, a city of 27,000 located in the southwestern corner of Montana — a state that with its prairies and badlands and Indian reservations seems downright exotic to most New Yorkers — and you realize she’s working from an entirely different reference point.