I fused it with pvc glue, extra support with rivets, to fill big gaps i used window screen as a fiber for the bondo to hold onto extra along with the pvc. On the shoulder pauldrons I took a bowl and vacuum formed the pvc over it, cut it mid way and then attached the two pieces together with the other part of the bowl pointing outward. I would like to fix that on the next one I make. I do know from some more recent photos there are more details on the chest that I missed.
I did add a few rivets for attaching tough areas and for comparison to other rivet marks. I carved all of the patterns with my dremel. The maker explained the build process at the RPF: It looks beautiful and fit for knights serving the throne. RPF user teranmx created this armor set based on the Kingsguard armor seen in Game of Thrones. The elite group of knights will keep you safe from assassins, family members, you name it. Being the King of Westeros comes with perks and one of them is having your own Kingsguard.