Cut two cardboard circles in size specified in pattern. Cut a hole in the center of each circle, about 1/2 inch in diameter. Thread a tapestry needle with a length of yarn doubled. Holding both circles together, insert needle through center hole, over the outside edge, through center again (Figure 1) until entire circle is covered and center hole is filled (thread more length of yarn as needed).
With sharp scissors, cut yarn between the two circles all around the circumfer-ence (Figure 2).
Using two 12-inch strands of yarn, slip yarn between circles and overlap yarn ends two or three times (Figure 3) to prevent knot from slipping, pull tightly and tie into a firm knot. Remove cardboard and fluff out pompom by rolling it between your hands. Trim even with scissors, leaving tying ends for attaching pompom to project.