My machine sews best from right to left when stitching out a panto. (back of the machine) Even if there are two passes before rolling the quilt I do the second pass right to left also. The panto designs are made to interlock and this will occur whether you go R to L or L to R. When stitching from the front of the machine I stitch from left to right. As dunster said above, the machine stitches better when going left to right.