Step 1: Take a rectangular piece of paper. Ordinary A4 paper, colored paper or cardboard can be used to enhance the decorative effect of the plane.

Step 2: Fold both sides of the paper in half and align them. Make sure the fold line is straight and forms a square.

Step 3: Unfold the paper and you will see a cross in the middle of the folding line.

Step 4: Fold the four corners of the paper in half so that the four corners are aligned with the center of the cross.

Step 5: Fold the four corners of the paper in half again, so that all four corners are outside.

Step 6: Fold the whole paper in half so that the corners are opposite.

Step 7: Fold each airfoil inward so that sharp corners form the front end of the fuselage.

Step 8: Finally, bend the wing downward along the crease direction to make it appear the shape of an airplane.

The skill of folding an airplane

1. Folding lines should be aligned: when the corners on both sides are folded in half, make sure that the two folding lines are aligned, so as to obtain a perfect crease and a symmetrical plane.

2. origami should be accurate: in the process of origami, it is necessary to ensure that each fold line is accurate and as smooth as possible, and you can gently press the crease with your fingers.

3. Determine the center line: When folding an airplane wing, find the center line of the paper so that the wing can be folded symmetrically.

4. Consider the proportion of multiple parts of an airplane: If you want to build an airplane with accurate proportion, you need to pay attention to the proportion of each part. For example, the ratio of wing to fuselage should be 1:2, and the ratio of tail to wing should be 1:3 and so on.

5. Add weight to the plane: Adding some weight to the front or bottom of the plane, such as coins and clips, can help the plane fly farther.

6. Try different paper: Using different colors and textures of paper can make your plane more personalized, while using different sizes of paper can get different types of planes.

7. Practice common models: Some origami models are commonly used, such as traditional darts model and atomic model. Practicing these models can help you master origami skills better.