Be sure to use your walking foot I spray basted my moms queen size and got to the end of inside border and had a big pucker took me 8 hours to rip out decorative stitches because thread matched so closely it was hard to see .I had forgot to put my walking foot on but I pinned just to make sure it wouldn't happen again .It worked fine on my smaller quilts and I liked it but big quilts I will use my basting pins.Good luck and have fun.