Start with a rectangle
Fold in half with right sides together. Sew... leave short ends open. Turn right side out.
String your beads. Leave enough (2") to sew onto scarf ends
Sew bead strands on onto end of scarf
Tie into knot. Strand should be hidden inside knot.
Repeat steps 4+5. Tie your knot first, placing it higher on the scarf. Sew down your bead strand. Loosen the knot and reposition at end with beads. Voila!