I went to Hobby lobby and picked up a circle craft punch, a couple sheets of white poster board, and a can of gold spray paint. I sprayed the sheets first. After drying time I cut them out with my craft punch and assembled them directly on the backing of the frame in a fish scale pattern. Instant cheap art.
If I were to do it over, I probably would have lined it up better for the actual square that shows and made it more even. I am also considering getting one or two more shades of gold and putting a few "scales" here and there in a different shade. We will see. I love the texture and the repeat pattern. What is filling up your walls, any homemade art projects you've tackled?