1. First measure the required width and length. The only thing to pay attention to is that the length must be reserved for sex: half love length+half card length+actual card length+half card length+half love length.

2. Fold the card into two lines. Note: you don't need a broken line to draw the love part. The following illustration may be clear. If you deduct the love part, the broken line is just half of the card.

3. Fold it and unfold it. Next, start painting love. Draw half love on each side and a beautiful love, as shown below.

4. cut the outline of love and cut the opening of love on the left and right sides.

5. Next, you are done. Gently "buckle" the top of love in the bottom, and the simple love card passbook will be completed.