In the experience to see a lot of triangle insert works, very beautiful, especially do a basic tutorial of triangle insert, I hope children's shoes like.
The size of the thin paper sheet is: 2:1, and then folded in half to make a double layer.
Fold the dotted line as shown.
The two sides of the paper are folded diagonally on the diagonal dotted line.
Fold diagonally upward according to the dotted line in the drawing.
The folded corners continue to fold upward along the center line.
Fold the left and right sides in half.
The combination method is as follows:
Here are some of the best examples from your experience, for your enjoyment.
The hardness of paper should be reasonable