Dahlia Maarten van Gelder  1985 Nov 1 2 3 4 5 6AReverse fold in the center to fold both ends up 6BCrease pattern seen from bottom 7 Fold ends out via zigzag reverse folds 8 9 10 11 Right flap to the left; point X between flap 12 Center: left flap behind right flap. Left end overlaps right end for 2/16. Repeat behind; very difficult 13 Finished: top view and side view