1, prepare a rectangular piece of paper, scissors, pencils, rubber glue, markers, etc. Fold the two long sides of the rectangular paper one centimeter opposite each other.

2. Choose a suitable piece of paper and fold it into a rectangle.

3. Fold the two corners at the other end of the rectangle to the opposite side, with the same size and angle, and then fold the whole edge upwards. After folding, it is an envelope.

Draw a stamp in the upper right corner and six small boxes in the upper left corner with a pencil. This is the place to fill in the recipient's postal code. Write the word postal code in the lower right corner, and then you can write the sender's postal code in the blank.

Draw beautiful flowers on the bottom of the envelope, so that the whole envelope will not be monotonous.

6. The prepared envelopes can be stored for later use. Pay attention to keep it dry to avoid moisture and pollution, so as to ensure the quality and appearance of the envelope.

7. Finally seal the envelope, and seal the envelope with glue or sticker. You can also add some extra decorations on the envelope, such as stickers, paintings, etc., to increase its aesthetics and personalization. After making the envelope, you can put it in the mailbox and wait for the postman to deliver it to your destination.

When making envelopes, you need to pay attention to the following points:

1. Paper selection: Choose paper with proper size, moderate thickness and good quality to ensure the firmness and beauty of the envelope.

2. Accuracy of crease: When folding paper, pay attention to the accuracy of crease so that the envelope can be assembled and sealed correctly.

3. Envelope size: Choose an appropriate envelope size as needed to ensure that letters can be successfully loaded into envelopes and sent out.

4. Sealing: After the envelope is made, ensure the sealing of the envelope to prevent the letter from being damaged or leaked during transportation.

5. Writing norms: When writing the information of the recipient and the sender on the envelope, you should abide by the postal regulations and writing norms to ensure that the letter can be delivered accurately.

6. Personalized decoration: You can add some personalized decoration to the envelope, such as putting stamps, drawing patterns or adding greetings to increase the attractiveness and uniqueness of the letter.

7. Pay attention to environmental protection: When making envelopes, you can choose environmental protection materials or recycle paper and other resources to reduce the negative impact on the environment.