umm...you are doing an all over design....then I think the important thing is to stabilize it which you have done by spray basting it. Don't know the size but there are suggestions out there to also do some pin or thread basting as which the movement of the quilt under the machine and readjusting as you go, the spray basting could come loose. If you were going to do more custom quilting....then yep got to stitch in the ditch first.