Hi. I am an artist and currently working on a project using mirrors. I need to transfer an image (portrait photo) onto a mirror so I can trace directly on the mirror surface so I have the guides to then paint over it. I would like to be able to use an overhead projector but of course the light bounces straight off the mirror. Does anyone have a solution for this? I could use the traditional method of drawing a grid and transposing by eye and measurement but I have a few of these to do and time is off the essence! Tips?