Fold a sheet of A4 red and white card in half.
Glue along the edge of the white card and stick inside the red, to create the base for your card.
Cut out dozens of mini envelopes from the other pieces of card. I had a special envelope-shaped punch but you can use my template to cut out your own with scissors. Fold these up and glue along the edges.
Lay them out on your card, with some facing forward, some closed, and some open.
Fold squares of card in to mini cards and decorate.
Address the cards to your Valentine from a secret admire and draw lots of hearts, kisses, lipstick prints and question marks.