Cut two cardboard pieces the length of tassel desired. Holding cardboard together, place a 12" length of yarn across top of cardboard. Wind yarn several times around cardboard.

Tie strands tightly together around top. Using sharp scissors, cut yarn between two cardboard pieces.

Wrap a piece of yarn tightly around strands a few times about 1" below top, securing ends with a knot. Trim ends of tassel.

Measure yarn approximately three times the desired finished length of cord. To determine how many strands of yarn to use, hold strand together and fold over. Add strands until desired thickness reached.
With two people facing each other, each person knots the end to a pencil and twists the pencil clockwise until the yarn is taut.

When the yarn begins to kink, one person holds both pencils, while the other holds the center of cord and lets the yarn twist. Knot the ends to prevent unraveling.