Michelle Stevens, an art aficionado since childhood, has had plenty of experience looking up in galleries and exhibits. Born with achondroplasia, a form of dwarfism, the 22-year-old graphic design student stands 4 feet tall. The angled view of art hung at 5-plus feet gives her a different perspective from other passersby, but, she said, “I can’t always see as much as I would like.”’