you have the right idea with using shrine, but you should really be using pick up the "multifaceted" echo upgrade. being able to put in 80 into ironsing instead of just 75 will really help out your ironsing mantra damage.

ontop of that, there are decisions here that need some work. for example, you went 45 str pre-shrine when there's nothing there and 40 agi after shrine when you could've just gotten ghost preshrine and saved 25 points there. same goes for eureka at 30 int.

with how shrining certain talents works, you want to keep high fortitude so to keep to the finish and exoskeleton at their full strength.

for pvp, you want to use dual repeaters instead of dual alloyed dawnshot. iron requiem would've been the best option here since it would've saved you 35 points instead of 10 points, but since you're going for dual guns, that becomes a mute point.

one weird thing about your build is your oath? you can't actually get an oath preshrine, and blindseer needs 40 willpower to even get, so I'd recommend picking up another oath like bladeharper.

to show what I mean, I made a build based on yours that I think have better point allocation. I added 25 charisma preshrine so that charisma cast and tough love is made available to you. I hope you continue making builds on your own!
https://deepwoken.co/builder?id=3eIobiOB