Gwendoline Christie has to be in the “mindset” of her characters before she arrives on set. The ‘Game of Thrones’ and ‘Star Wars’ actress will use music and certain fragrances to help her get into character. She told Total Film magazine: “I need to be thinking about my character from the moment I arrive on set: I find objects can be an endless supply of inspiration for that. I might take a photograph, use a certain scent, but often for me, it’s usually music. “There was a PJ Harvey track I used for one character and it was quite confronting. I found that listening to that endlessly would immed…