Step 1: Supplies
Tape (clear packing tape works best)
Glue stick (or adhesive roller)
Red construction paper (about 3 sheets)
DON'T FORGET: A recordable audio greeting card
The links below provide the sound effect and the image (you will need them later on).
Step 2: Adding the Sound Effect & Cutting
Now cut most of the front of the card off (up until the white noise activator, be sure not to cut off the noise activator).
Print out the 8-bit heart from the link (found on the first part of this instructable). You may need to scale the image before printing so that its height and width is about the same as the card (when closed).
Glue the paper you printed to the cardboard (or you can use an adhesive roller). Cut the heart out (you should be cutting through the card board too, because you had glued them together or used the adhesive roller).
Next, cut 2 pieces of red paper (that is the same size of the card when closed).
Also cut a piece of red paper that is the same size as the 8-bit heart.
Lastly, cut red 2 strips of paper the size of the little front flap of the card (the front flap you cut).
Step 3: Gluing
Next, glue the piece that is the size of the heart to the cardboard side of the other heart (the one from step 1).