How to create a tassle using yarn Posted on June 3, 2014 by articlesofadomesticgoddess Tassels: Cut (15) 12 inch strands of yarn. (8 inches for child, 6 inches for toddler) Tie in center tightly. (It helps to pass the needle threaded with the end that you tied the tassel with through the center of the tassel to secure it better.)