How do I fold a flat piece of aluminum foil into a cone shape?

To fold a flat piece of aluminum foil into a cone shape, follow these steps: 1. Cut a circular piece of foil with a diameter equal to the base of the cone you want. 2. Fold the circle in half to form a semicircle. 3. Draw a straight line from the center of the straight edge to the point of the semicircle. 4. Cut along this line to create a sector of the circle. 5. Open the sector and fold the straight edge to form the cone's slant height. 6. Fold the two ends of the sector together to create the cone's base, and secure with tape if needed. Adjust the cone's shape as desired.