Another possibility is to stitch diagonally through the blocks, providing you have blocks set in even rows. I just eye ball it from corner to corner and it works pretty well. You could draw lines, but I never do. The nice thing about this is that at the end of the row, you leave the needle in the fabric, lift the presser foot, turn the quilt, and stitch a diagonal line through to the other side. You can actually do a whole quilt without having to cut threads at the ends of the rows. If this seems confusing, send me a PM and I will provide more details via some drawings.