Handmade boat model simple production how to do

A rectangular piece of paper folded in half, the two corners of the folded side of the folded and together, two small triangles and into a large triangle with an arrow, the triangle under the excess of the two layers of paper, the triangle from the lower edge of the line were flipped and folded back into a triangle from the triangle from the center of the line of the part of the two sides correspondingly pull apart into a square "and then a square with a double corner of the part of the triangle were flipped up to the folded into a triangle. Repeat the part in parentheses, and pull the two corners of the previous folding step apart.