To make a paper crane, first unfold a square of paper by flipping and unfolding it twice to form a diamond shape. Then fold both sides of the diamond to the center and flip it upside down, repeating the folds on the other side. Next, fold the top side down and flip the shape, folding the four sides of the long diamond. Finally, fold both sides up with one side as the beak and the other as the tail, opening the wings to complete the paper crane.