Step 1: First, prepare a small square piece of paper. Fold the four corners of the paper in half along the diagonal and spread it out, leaving creases.

Step 2: Turn over: Fold the top, bottom, left and right in half and unfold to form a herringbone crease.

Step 3: Pinch the two creases of the triangle on the picture and fold them together.

The fourth step is to pinch the two creases of the opposite triangle and fold them together, thus forming a double triangle.

Step 5, fold the four bottom corners of the double triangle to the top corners respectively, and align the bottom edges with the middle creases to form four triangles.

Step 6: First turn one of the triangles upside down, and then unfold it from the inside, as shown in the figure.

Step 7, press the unfolded part with your fingers from top to bottom, and the middle mark of the upper part is aligned with the middle mark of the lower part. Form a small square.

The eighth step, the other three triangles are also operated in the same way, one * * *, and four small squares are obtained.

Step 9: Fold the corners in the middle of the bottom of the four small squares diagonally and align them to form four triangles.

Step 10: Fold the two corners between the bottom edges of the front side and the back side upward to the upper midpoint.

Step 1 1: Four sides are exchanged in pairs (front, the left side is folded in half and aligned to the right. Turn the right side of the back to the left and align). Cut up from the midpoint of the bottom edge along the crease until there is an edge on the inside.

Step 12: Switch the four sides back in pairs. First, the four corners on both sides of the bottom edge are folded inward into four triangles, and then the four corners in the middle are folded outward into four triangles.

Step 13: Fold the front, rear and four corners of the bottom upward by a small part.

Step 14, and finally, exchange the four sides of the two sides, so that the beautiful heart is folded.