In a city that makes stars, across a landscape that seconds as a backlot for so many film studios, Lisa Yuskavage focuses her newest exhibition on the magic behind the finished product. This is an interesting if not endlessly fascinating body of work from an already influential and famed painter. Yuskavage seemed to take the occasion of her first show in LA in 3 decades to heart, it’s about sets and process, about the making of a universe just as much as the universe she is creating herself. It is a show about production, about a woman’s place in the history of production. It is about the artist and the aritst process while looking at something quite final, and David Zwirner’s spacious…