The first step is to fold the square paper in half.
Step 2: Fold the unopened side up 1 cm to open it.
Step 3: Fold the leftmost line in the middle.
Step four, press the inner corner out of the crease.
Step 5, pinch clockwise according to the crease.
Step six, then pinch out a sharp corner.
Step 7: Fold down four sides in turn.
Step 8: Fold the last corner to one side.
Step 9: Hold the sharp corner with your hand and turn it clockwise.
Step 10: Roll the four edges of the outermost layer outward.