1. Cut two pieces of fabric 12.5 inches by 3.5 inches.
2. Cut a piece of interfacing 3×6 inches. This will be the approximate size of your bowtie. Place right sides of fabric together. Place interfacing in the middle of the the top piece of fabric (this will be on the wrong side of the fabric). Pin pieces together.
3. Sew around three edges of the fabric, using a 1/4 inch seam allowance. Leave one of the end sides open.