Place the photo on the file folder, keeping the folder folded so you have 2 layers. Lightly outline the edge of the photo with the pencil. Set aside the photo. Draw a heart shape about 1-inch larger than the photo outline. Cut the heart shape out of the doubled folder. You'll wind up with 2 hearts.
At the bottom of 1 heart, make 2 (1-inch) cuts, 1 inch apart, on either side of the heart's point. Fold this piece back to make a stand on the back of the frame.
Cut out the center of the remaining heart to within about 1 inch of the edges. Place this heart over the photo. Use it as a guide to trim the photo to fit. Set the photo aside.
Glue the bottom and side edges of the 2 hearts together, leaving an opening in the top large enough to slip the photo into the frame. Glue cereal over the front of the frame. Let stand until dry.
Spray the cereal with the decorating spray, if desired. Let stand until the spray is dry. Insert the photo into the frame.