So I did this picture a few years ago for a throw away art class in college. The project at hand was to create a collage (of anything) and I couldn't think of anything so I reverted to what was on my mind...Transformers. I sketched out a generic headshot of Optimus Prime and then scoured magazines and what not for colors to match the piece. What you see in the picture was my final product. I didn't completely fill the space and that's what I'd like your help with. I was recently cleaning up and came upon this collage and would now like to finish it. What suggestions do you have to fill in the void behind OP?