Hello Ladies, need some advice again; I am pretty new to quilting and therefore tried some straight line quilting on my pieced top. I have pinned everything very good, but still the fabric started shifting a little, but so much that the patchwork i did got wonky ( and i matched the seams up perfectly while sewing, but now it looks terrible) what do i do to prevent this? I did quilt one row down and one row up and so on but the pieced rows still look wavy and wonky