This is just a decorative variation of the chevron stitch family. You need to know the Chevron Stitch to be able to continue with this tutorial.
|Fig 1: First, stitch a row of chevron stitch.||Fig 2: Bring out a contrasted threaded needle from the left end of the chevron stitch row. Pass the needle in and out of the diagonal stitches, as shown.|
|Fig 3: A finished portion of this stitch looks like this.|