Materials:

1, a piece of cloth (you can choose a cloth suitable for your child's head circumference, such as cotton cloth. ),

2, scissors,

3. sewing machine or needle and thread,

4. Measuring ruler,

5.cap template (you can search and print it online).

Steps:

1. Preparation materials: Choose suitable cloth, usually cotton cloth or canvas. Then prepare scissors, sewing machine or template for needle and thread, measuring ruler and cap.

2. Measurement and cutting: Measure the child's head circumference with a measuring ruler, and then draw the required shape on the cloth with a hat template according to the measurement results. Then use scissors to cut the cloth into the corresponding shape, leaving appropriate seams.

3. Sewing hat: Fold both ends of the cloth in half, and sew along the edge with sewing machine or needle and thread, without sewing the brim part, so as to ensure that there is room to turn the brim out.

4. Turn the hat over: Turn the sewn cloth over so that the surface of the hat faces outward and the inside faces inward.

5. Making the brim: arrange the brim of the hat according to the shape of the template, and sew the brim with needle and thread or sewing machine to keep the shape of the brim.

6. Finish: Finally, you can decorate the hat according to your own preferences, such as sewing some patterns and putting up some signs.

Bottle cap type:

1, classic hat: This is the most common hat type, usually with curved brim and loose body.

2. Sun protection hat: This kind of hat usually has a long brim to provide better sun protection. The cap body can be made of a material with good air permeability, such as mesh cloth, to increase air permeability.

3. Sports hat: This kind of hat is usually made of lightweight, moisture-absorbing and sweat-wicking sports fabric, which is suitable for outdoor sports and fitness activities. They may have zippers or shackles that can adjust the size of the hat to better fit the head.

4. Fashion hats: Fashion hats are usually made of different materials, such as leather, flannel or silk, and may have special patterns, embroidery or decorations to show personal style and fashion sense.

5. Military hat: This kind of hat usually imitates the style of the army or soldiers and uses durable materials, such as canvas or camouflage cloth. They sometimes have extra functions, such as hanging ropes, pockets or marking on the side.