Don't quilt in one piece. There is a video but the way is to divide the king size when you have made the top into 4 sections. Sandwich and pin or spray baste . Now decide how to quilt. As you quilt leave about 1inch from each edge. Two quarters finished join by sewing top piece then lay flat and fit together butting and stitch together easier to hand stitch.then I match back sections folding one under as a seam and I hand stitch . Now finish quilting off to join the two sides. Sound a long job I find it goes very quickly. Then quilt and join the other 2 sections.the most difficult and heaviest part comes now join them all, get hubby to help. To keep weight off the machine with same process.
Binding next.