Measure the length of the scarf.
Cut two strips of fringed fabric, each equaling the same length as the length of the scarf. The fabric strip may be as wide as you prefer.
Fold down the cut edge of one of the strips by 1/4 inch, then fold the edge over another 1/4 inch. Pin the rolled edge of the fringed fabric strip along one of the edges of the scarf using straight pins. Repeat this process for the opposite side of the scarf.
Sew along the pinned edges using thread and a sewing needle. Remove all of the straight pins.
Trim off any excess thread before wearing the scarf.