NEW WORK for an upcoming group show

I am currently creating two large self portraits for a group show in June.  This is the first step in my process.  I have collected this thick, grainy card-board colored paper from the cafeteria at the school I teach at.  It is used as a barrier between stacks of food.  I initially salvaged a huge pile of it from the garbage, but now it is set aside just for me.  My coworkers are so supportive!  I want the backgrounds of my images to appear like old photographs.  One background is a black/brown color and the other is this rust/sepia color.  I used whatever paint I had laying around (acrylic and latex) and a lot of water.