Send granny's kiosk how to fold axisymmetric window flowers

1, first find out the middle point of the material plane in three parts, one part upward upward fold.

2, followed by another corner of the part backward fold, flatten the material and then folded.

3, and finally can be symmetrical. Window Decorations are paper cutouts pasted on window paper or window glass, one of China's ancient traditional folk art.