Origami Envelope Folding. Along the square, fold the left point back to the left edge, fold it again back toward the middle, then unfold the last fold. Note that the 2 diagonal crease should be valley folds while the horizontal crease is a mountain fold.
15cm x 15 cm or any square paper difficulty: Fold your own envelope from a single sheet of a4 or letter sized paper. For a standard gift card i recommend a 9 x 9 inch square.
Saved by phuong anh vu thi.
15cm x 15 cm or any square paper difficulty: All you need is a single sheet of paper, write your letter, then fold it up! It is actually more appropriately called letter 'wrapper' since you wrap your letter like a gift with this origami. I love how elegant this origami envelope looks.