...and lastly another to the right, stopping your stitching
1/4" from the end as done before. Backstitch one stitch there to
secure stitching. Remove from the machine. Fold the unit right sides
together to line up the two un-sewn bits of seam. Stitch from the
previous stopping point to the edge of the unit, backstitching at the
beginning of the seam to secure the stitching there...