Fringe is an embellishment. Fringe is often used on the ends of scarfs, or as tassels on hats. To apply fringe you can sew it on, or use a crochet hook to easily attach it. Whichever way you apply your fringe, you first must cut fringe.
How to cut fringe
Hold 1 strand of each yarn at bottom edge of cardboard. Next, wind yarn around a piece of cardboard the depth of finished fringe. Then, cut through yarn along top edge. Rep process for desired amount of fringe.
Each piece will be twice finished length. This is because, when you attach the fringe, you will fold it in half.