THROUGHOUT the film Yohanna, Laura Basuki maintains a consistent appearance: a gray nun’s habit with a veil, a rosary around her neck, and a fabric tote bag slung over her shoulder. But, for her 84-minute performance in the film by Razka Robby Ertanto, Laura had to acquire several new skills. She became proficient in playing the guitar, riding a racehorse, and even driving a pickup truck. Fortunately, she was already accustomed to driving a