Thick plastic sheet
Cut two rectangle pieces in cardpaper of measurement 2" more than the size of a normal photo. Mark 1.5" on all sides of one piece of cardpaper and cut out the inner rectangle.
Apply fabric glue to this portion and attach the foam on the side as in the picture.
Now apply fabric glue again and stick the cloth neatly and fold the sides to the back side for neat finishing.Allow it to dry well.
Stick the other portion of the cardpaper to this portion from 3 sides leaving one side open. Dry well. If required use cellotape to bind it.
Finally attach a thick piece of cardpaper on the back side to give support to the photo frame to make it stand.