Tài liệu tham khảo về cách xếp hình con rắn. | Creator Unknown. Diagrammed by Andrew Anselmo Feb 2002 1 White side up. Valley fold 2 Valley fold to along diagonal and unfold. center. Valley fold along other diagonal to mark middle and unfold. Fold top and bottom to middle. z - - 4 Valley fold top to bottom. 3 Valley fold to center again. You may leave a little room for the next step. 5 Valley fold approximately where you want the neck to begin. Unfold then outside reverse fold. 6 As in 5 valley fold where you want the head and unfold. Then outside reverse fold the head. A 7 7 The snake body is now complete. 8 Valley fold and mountain fold along the body to give the snake some spring. 9 If you look at the snake from the top it looks like a spring. Push with thumb and forefinger at A and B to make the snake move in direction .