Overview -- Techniques : Precreasing : Square grid ; Triangle grid -- Pleat intersections : 120-degree pleat intersection ; 120-degree inverted pleat intersection ; 90-degree pleat intersection ; 60-degree pleat intersection ; Rabbit-ear triangle sink -- Twists : Triangle twist ; Square twist ; Hexagon twist ; Rhombus twist ; Open-back triangle twist ; Open-back square twist ; Open-back hexagon twist -- Beginner projects : Five-and-four ; Spread hexagons ; Tiled hexagons ; Star puff ; 3.6.3.6 ; Pinwheel ; Open-back hexagon twist ; Basket weave ; Water bomb ; Square weave -- Intermediate Projects : Château-Chinon ; Rhombus weave ; Star twist ; Roman church floor tiling ; Daisy chains ; Double triangle sawtooth ; Stacked triangles ; Bird base ; Propellerheads -- Advanced projects : Arabesque flourish ; Field of stars ; Negative space stars ; 3.4.6.4 ; Aztec twist ; Arms of Shiva -- Gallery.