When you sew a doll together with all of this yarn, be sure to tuck the yarn out of the way while sewing the head together. And remember how you left a 1/4 inch free at the top of each head piece? Well, that’s because when you sew the two head pieces together at the top, the yarn won’t get in the way. See the seam along the top of the head? When you sew the head pieces together, the yarn should meet right up and hide the fabric below.