Gather your supplies and disassemble the photo frame.
Measure the dimensions of the photo frame.
Cut out the shelf liner—it can be a little bigger than the proportions of the frame. This will help you stretch the liner out and secure it in place towards the end.
Turn the photo in the frame over to get a white backdrop, or use any other colored paper or photos.
Place the liner over the paper.
Pop the frame back into place and assemble the entire frame. Secure the paper and the shelf liner with the cardboard protective cover.