Lady Aga answered:
Thank you. The basic centre pattern is on Gudrun's fabulous Hap shawl class here on Craftsy, I simply substituted a larger edge from another pattern than that used by Gudrun, details are on my Ravelry project page for the Hap, Hap Happy shawl 2 of 2, found under Gudrun's class projects on Ravelry. My username there is the same as here, Lady-Aga. HTH.