To start my over-exposure piece, I first chose the two images I wanted to use. I looked for two images which might go well together, and at least one that had texture and was considered abstract. I had to make them the same size, so since one was smaller than the other I had to make the smaller one bigger so it covered the entire picture.

I then went and copied my textured one onto my other photo, and lowered the opacity so the bottom layer was visible through the top layer. I adjusted it until I was satisfied with my outcome.

Final works: