First, you will need a long narrow piece of fabric that is exactly the width of your quilt, by 9 inches. Smaller wall hangings can have thinner sleeves, but don't go smaller than 6". Make sure selvedges are removed. Fold each of the short ends over 1/4" and hem. Now fold the strip in half lengthwise, with wrong sides facing.
Stitch those raw edges of the long sides together with a 1/4" seam. Press seam open. Press entire sleeve flat. Take one folded edge of the sleeve and re-press it 1/4" away from the original fold line. Make sure this new fold line is 1/4 inch closer to the raw edge.
This will cause the front of the sleeve to be larger than the back of the sleeve, allowing it to 'pooch'. Now lay the sleeve with the raw seam face down onto the upper edge of the back of the quilt. The ends of the sleeve should be just inside the binding. The top of the sleeve should lie just shy of the inside edge of the upper binding. Pin.
Now you need to whipstitch the sleeve in place. Start along the top edge and work your way around. Space your stitches 2 to 3 times further than you would on the binding so that they sleeve can be easily removed when the time comes.
Ensuring the stitches do not show through to the front of the quilt. Don't stitch the ends of the tube closed! Remove pins. You are finished! If it's done right, the top of the hanging sleeve should not extend beyond the top of the quilt. Now you can slip a rod through for display.
*** If your quilt is very large (queen with drape or bigger), you may need to cut the sleeve in two before hemming & attaching, leaving a space in the middle for extra support when hanging so that the quilt rod will not sag under the weight.
