Oh Wow!!!!
Templates or FPP ??? Just noticed the Iron on templates included bit on the cover ...
So really its the same as My gemstone patterns!
I would suggest you try something simpler to find how you get on with the technique as I and Helen did with the practice template for a simple Gem from MJ Kinmans website.
What we found was it was the prep that took the time, the actual assembly was quite quick and straightforward.