I was taught to find the seam that is closest to the center and stitch from edge to edge, then turn the quilt and stitch the seam closest to center from top to bottom to make a +. Or, if your blocks are on-point, go from corner to corner to make an X. Then, depending on how wide and long your quilt are, skip the next seam and stitch in the next seam, going from the center out and alternating the seams on either side of the center seam. Once you've done this both edge to edge and top to bottom, go back and stitch the seams you skipped, once again alternating the seams on either side of the center seam. If you have a border that you don't want to cross, start and stop at the border seam, shorten your stitch length and take a couple stitches to secure the stitching before you move to the next seam. Once you get through with all the crosswise and lengthwise seams, stitch all around the border.