Things You'll Need
A bed throw does not have to be expensive or difficult to make. Fleece fabric is easy to work with and inexpensive for the 60-inch wide fabric. It's soft, it's nice to snuggle up with, and it doesn't fray when cut. This makes it easy to sew with, as there is no need for surging or double folding for hems.
Decide on the size of your bed throw. Consider that the throw will, most likely, be folded to hang over the end of the bed when not in use. Measure the width of your bed adding extra yardage for the overhang you prefer. The length of the throw can be just long enough to cover the legs and lap or the full body. Again, this is a preference.
Add an inch all around your measurement, for hemming. With your final measurement, purchase fleece fabric (see the resources below) to match the décor of your bedroom and bedding. Also, purchase matching thread.
Re-measure your fabric and cut off any excess over your final measurements.
Pin 1 inch under all the way around the prepared fleece fabric, with straight pins.
Sew, close to the inside edge, all the way around the throw. Use a slightly larger stitch than for normal garment sewing. Sew the outside, long edges first, and then the top and bottom edges. For the corners, when sewing the top and bottom, make sure the edges line up, making a nice smooth edge.
Fringe, other trim or binding may be added to the edges of the bed throw.