Write an article based on this "Use iron-on interfacing to add stability to the hat (optional). Cut out a large circle from sturdy green fabric. Divide the circle into a ring and a center circle. Cut out a rectangle for the body of the hat. Form a cylinder from the body rectangle. Pin and sew the top to the cylinder. Pin and sew the brim to the hat. Cut out a yellow rectangle for a buckle. Cut out a black rectangle for a band. Attach the buckle to the band. Glue or stitch the band to the hat."

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If you are using a fabric that is somewhat flimsy, place iron-on interfacing on the back side of the fabric and iron in place until bonded. This will help your hat hold its shape, but it’s not required. Craft felt is a good choice for this project--it’s strong, comes in multiple colors, and is inexpensive. The circle should have a diameter of about 12 inches (300 mm).  Avoid using soft, foldable fabric like jersey for this project. This hat is designed for children. For an adult-sized hat, you may need an initial circle that is roughly 18 inches (460 mm) in diameter. Cut a small circle out of your original circle. The diameter of this circle should roughly match to diameter of the wearer's head. Be sure to cut out the center of the circle instead of cutting through the outer ring! To find the correct head size, drape the fabric over the wearer’s head and mark it with a pencil. Use the same green fabric used for the circles. The length of the rectangle should roughly match the circumference of the smaller circle with 1 inch (25 mm) of extra material for a seam allowance. The width should be about 12 inches (300 mm). Fold the rectangular piece of fabric in half widthwise, with the wrong side facing out, and pin in place. Stitch a straight stitch along the open end of the fabric, roughly 1⁄2 inch (13 mm) in from the edge. You can also use fabric glue or iron-on seams for the hat! With the wrong side still facing out, and the wrong side of the small circle facing up, pin the circle to one open end of the cylinder. Stitch in place. The right sides of the fabric should not be visible to you at the moment, but they should all face one another. Turn the hat upside-down and right side out. Pin the inside of the ring to the remaining open edge of the hat and stitch in place. Use sturdy, ravel-resistant fabric like felt and cut out a rectangle that is 4 inches (100 mm) by 5.5 inches (140 mm). Cut out a second rectangle from the center of this rectangle, making an outline that is roughly 1 inch (25 mm) thick. The strip of black fabric should be about 3 inches (76 mm) wide and the same length as your original body rectangle. Felt is the best choice, but you can use any sturdy, ravel-resistant black fabric. Sew or glue the yellow buckle piece onto the center of the black band. Fabric glue is best, but you can use school glue for felt and most other fabrics. Sew or glue the black band around the bottom of the hat, just above the brim. The band should almost lie flush against the rim of the hat. Bring the back edges together at the back edge of the hat, allowing them to overlap.