Create a square piece of paper or card and fold into a triangle
Fold paper as shown
Cut along line
Pull only the outer upper triangle back so you end up with a big triangle
Make a new square by folding the outer triangles up
Create a square piece of paper or card and fold into a triangle
Fold paper as shown
Cut along line
Pull only the outer upper triangle back so you end up with a big triangle
Make a new square by folding the outer triangles up