Here it is completed. A great design by Blomqvist and Persson that is tatted in one pass. I'm such a fan of one pass designs! Very clever.
The chains that link the centre medallion to the outer diamond shapes have to be straighter than their natural curve which means there is some tension there and those chains do not lie perfectly but apart from that I'm pretty happy with it.
If I was making it again, I might try to tat the bottom joining chain between repeats the other way (as in the pattern) instead of reversed as I chose to make them. I still think it needs a bit of adjustment in that area and it would be worth remaking.