Get some cardboard, sandwich bag, and a scissor
Step 1: Cutting
measure your picture and add 1inch to the dimensions and then use the original dimensions and trace it on so you know how big is the frame and cut it out.
Step 2: Transparency
Cut the sandwich bag and tape it on the frame so the picture doesn't fall out when you use it
Step 3: Pictures
The extra cardboard that you cut is used to put back in so the picture doesn't fall back out doesn't fall back out