Scottish stitch is a canvas stitch but I find it a pleasure to work this stitch as a filling on linen or Aida in a fine thread.
It is a stitch which is very similar to cushion stitch and creates a neat filling of framed squares. As illustrated this stitch is made up of diagonal straight stitches framed by a border of tent stitch.
Interest can be created by working different combinations of thread which catch the light in different ways. For instance contrast a shiny thread such as silk with flat thread such as cotton.