Los Angeles, nightpalm.com Before launching her interior design studio, Howell started out as a music video director and head of fashion photographer Herb Ritts’ music video agency. Music — and, perhaps, Ritts’ glamorous photographic eye — still informs everything she does. Howell’s interiors are lush, moody, filled with both iconic and obscure pieces of vintage — often European — and with a special eye for art. She’ll often say things to clients like “I want your house to feel like David…