http://sew4home.com/projects/pillows-cushions/464-last-minute-gift-pillows-relaxing-neck-pillow

Sewing Tools You Need

Fabric and Other Supplies

½ yard of 45" wide fashion weight cotton fabric or cotton flannel. I made one from Aqua Garden Trellis/Flights of Fancy collection, a Paula Prass design from Michael Miller, and one from Duck Egg Acanthus/Belle collection, an Amy Butler design from Rowan.
2 feet of 7/8" satin or grosgrain ribbon per pillow.
Bag of Poly-fil to stuff pillow
All-purpose thread
Scissors or rotary cutter and mat
Hand sewing needle
Straight pins

It's best of you pre-shrink your fabric before cutting.
Download and print four copies of the neck pillow pattern. Cut out and tape together the four shapes to make one bowtie-shaped pattern piece.
Using your assembled pattern, cut three pieces. I fold my fabric into thirds so I can cut all three pieces at once.
You'll see an * on either end of your pattern piece. Once you have your 3 pieces cut, and while they are all still pinned together, cut the tiniest little V-shaped clip, about 1/8" in depth and width. This marks the spot where you stop stitching and attach the center of your ribbon handles. While you can use a marking pencil, I found this V-clip easier to spot while sewing.

Pin two of your three pieces of cut fabric right sides together along one side from one V-clip to the opposite V-clip. Using a 3/8” seam allowance, stitch from the precise center point of the V on one side to precisely that point on the opposite side. One side remains open. Because of the narrow seam allowance and the curves, sew slowly to assure your stitching line is smooth and accurate.
NOTE: This pillow is essentially a chubby triangle, which is helpful to keep in mind as you are assembling – remember you need three sides to create the correct dimension.
Loop your ribbon to form a handle and pin on center of each V-clip with the loop facing inside.
Stitch your second seam from V-clip to opposite V-clip to include half of the ribbon as shown below.
Pin your remaining piece of fabric as shown:
Stitch from one V-clip to about the center of the pillow. Leave open a 4" gap in the seam. This is where you will stuff your pillow with Polyfil. Then, finish stitching to the opposite V-clip. Be sure to backstitch (back-tack) at both sides of the opening to keep the seam from coming open during the turning and stuffing process.
Turn your pillow right side out, and stuff the shape until pleasingly plump but not so rock hard that it's uncomfortable.
Tuck in the seam allowance at the opening and slip stitch closed.