Check your library (or purchase) these books:
http://www.amazon.com/Heirloom-Machi...dp/1571202366/
and
http://www.amazon.com/Machine-Quilti...dp/B000NNGZJE/
The first shows you with photos and in detail how to master free-motion quilting on a domestic machine. The second shows you different methods of splitting a large quilt up into sections so you can quilt large quilts on a domestic machine.