Viking hat (Birka cap)

Recently I worked on a Viking cap or a 4 panel Birka cap for a friend.  I wish I would have taken more pictures but I have a few below.  The cap itself is made of black wool with a linen lining.  The decorative stitching on the cap is a wool and cotton/linen blend. 

I used a double herringbone stitch with red and gold yarn/floss and a white wool yarn as an added stitch overlapping the herringbone stitch.  I have never done this complete combination of stitches before and I was pleased with the outcome.  My friend seemed happy as well.