Not every young actress gets to play Lady Macbeth or Blanche DuBois when they’re starting out. Take British performer Lorna Watson for example. One of her first jobs was dressing up as a giant strawberry at Wimbledon. “I did work at a rugby stadium too and I had to dress up as a pint of Guinness once,” she recalls. “And they had to give me a bodyguard because I kept being body-tackled to the ground by very large men. That was one of the low days,” she sighs. Thankfully Watson is over her ‘low days.’ But she’s still sporting an odd costume in her new role as the crime-solving nun in “The Sister…