Ok ive just started to set up my image planes so i can model a car. I have 3 views, side, front and back. I have the side and front views set up fine, but when i add the back image plane, it faces the same way as the "front" image plane. i know there's the rotate tool in the plane attributes, but it rotates on the wrong axis. How do i flip the "back"image plane to be facing the right way?