The simpliest way to create a pixel Valentine’s Day card is to buy two chocolate bars. One must be made of dark chocolate, another one – from white. You have to breake chocolate bars into pieces to get black and white chocolate “pixels”.
Then you have to put them in a box. You may use your own box, or can download it in PDF from here (note: may be it will need little adjustments for your type of chocolate bars, feel free to make them)
This is very tasty pixel art!;)