Paper airplane: delta model

Here are the different steps to make a paper delta glider airplane origami:

1. Place the sheet in landscape orientation. Fold it in half horizontally (top edge to bottom edge) to mark the center crease, then unfold.
2. Draw (or imagine) three horizontal bands: first fold the top edge towards the center, then the bottom edge towards the center, to mark the guides.
3. Then fold the sheet vertically in half (left edge to right edge), then unfold. This line marks the axis of the nose of the airplane.
4. Fold the left edge towards the midline, bringing the top left corner to the indicated mark to form a diagonal: the top edge aligns with the midline. Repeat the same for the bottom left corner (the two folds cross diagonally).
5. Now fold the top right corner towards the center along the same diagonal, symmetrically. The two top edges form a large triangle pointing to the right (the future nose).
6. Fold the top corners of this triangle towards the center again to refine the tip: the nose becomes narrower and triangular.
7. Fold the model in half along the vertical center line, nose to the right (the triangle towards the outside).
8. To form the first wing, fold the top layer diagonally downwards along the indicated line, from the nose towards the back. Mark the fold well.
9. Turn the model over and repeat the same fold symmetrically to form the second wing.
10. Unfold and adjust the wings so that they are flat and symmetrical. The "Delta" airplane is finished, with a wide wingspan and a pointed nose.