The materials you need are 2 pieces of paper, scissors, glue, and writing/coloring supplies.

First, grab a piece of paper and fold it in half (hamburger style). Now set that aside and grab your other piece of paper.

With your paper, cut it to around half an inch width wise, and the length of about 2 inches. Then, take the slip of paper and fold it back and forth, creating a spring. Next, take the spring and glue it to the inside of the card.

Now, with the remaining paper you have from the spring, cut out a piece of paper in the shape of a heart. Color the heart and when done, glue it onto the end of the spring,

Lastly, write in and color the card to your liking, and boom! You got yourself a pop out Valentine's Day card to give to someone special!