Thanks Jeffrey. I am just in the process of doing something similar. I am making a mask that is folded like a greeting card, so that it is easy to line up the negative and paper. I'm drawing a grid on the edges of the mask so that I can use them for reference points for dodging and burning paper negatives. That's just extra fluff right now... my main concern is keeping my negatives in contact with the paper.

Thanks again.
Tom