If my quilt is in block form, I use one of the seams that go across the quilt at the top. I put in invisible thread and stitch in the ditch of that seam with large stitches. I then flip the fabric sleeve up and stitch in the ditch just under the binding. It makes a nice solid sleeve and the large stitches are easy to remove once the sleeve is no longer needed. The ugly sleeve fabric then goes in my scrap basket to be cut up.