this model designed by Akira YoshizawaIf you like this video please SUBSCRIBE me~~ 如果您喜歡這部影片歡迎訂閱我的頻道You only need 1 sheet of square paperI used 15cm*15cm 您只需要一張正方形紙我在教學時使用的大小為15cm*15cmHope you enjoy and have a good time !希望您有個美好的一天 !