Sorry I am late posting this week's Build a Seam! I have been having a few minor computer problems and need to dedicate some time to it.
But here is the seam at last. It is a woven stitch. You start by making small straight stitches on either side of the seam, being careful to make sure the stitches of the second row are exactly between the stitches of the first row. Then it is just a matter of weaving your thread through the straight stitches. I've drawn a diagram to follow:I hope this helps but, if not, don't despair - there is a very good example and explanation by Lynn Schoeffler in the January 2008 issue of CQMagOnline at:
This should be a fun seam - it opens up the possibilities of using threads you would have to couch down, for example. Also, the loops are perfect spots for beads or embroideries. Have fun!