Susan, after I have my quilt sandwiched, I either stitch in the seams of the quilt top, called stitch in the ditch, or I go diagonal with my lines. To do that, I use blue painter's tape and lay it on my fabric so that I can sew next to it. I am an experienced beginner and have not tried anything fancier than that.
I don't know if this helps or not. You may want to research sandwiching your quilt, if that isn't something you understand. You will probably also need to figure out how to actually do the sewing....starting in the middle, rolling the quilt if necessary, etc.
I learned the basics in a quilting class. Maybe that could be something for you.
But you have come to the right place to ask questions. Ask away.
Dina