Wrap a strand each of A, B and C around cardboard 7 times. Cut a length of A, and thread doubled into large-eyed blunt needle. Insert needle under all strands at upper edge of cardboard. Pull tightly and knot securely near strands. Cut yarn loops at lower edge of cardboard.
Fold remaining length of A into thirds and wrap tightly around loops 1 1/2 in. (3.5 cm) below top knot for Tassel neck. Knot securely; thread ends onto needle and pull through to top of Tassel. Braid ends together for about 7 in. (18 cm). Thread end of braided strands into blunt needle, and pull to inside of Tassel.
Trim Tassel ends evenly.