I made this very simple Valentine Card using the same method I used for my Christmas Card , the only change is the background which in this card has been painted, but you can use a pink card as a background instead.
What you need:
A hole puncher, red yarn thread, plastic needle, a pink A4 paper card( in my card I painted the card using watercolor).
How to do it:
Just fold in half your pink card, draw the shape of heart and make holes along the heart line.
Now you can sew your very simple Valentine card.