Is there anything I should really change up

I like my skill set and my armour weapons ... I think they compliment my play style and in dungeons and overland I'm pretty much ok but in PvP I'm feeling I could contribute more

I'm running 5 twice born start with thief and shadow

3 imperial wrath jewelry

I normally run two lightening staffs

One that procs heals and one that does fire damage over time

My skill bar is normally set up with

Wall of destruction
Sweeps
Retirubution for DoT and HoT
Blazing spears
Destructive reach ...sit em on there arses in my AoE

Second bar I change for when PvP

I add restro staff and go

Combat prayer
Mutagen
Honour the Dead
Healing springs
And I pull retribution from bar one in and put in repentance on the first bar

I'm getting kills and getting heals and pulling 200k ap in 2 hours just from heals and one maybe two killing blows

What can I do to help out more

I know about repairs and siege weapons ... I use them too

I'm thinking in terms of gear and skills only

Thank you
Edit ...

I also switch between 3 monster sets

Ilambris and skoria when wanting more DD as most skills are fire lightening based ilambris gets some sweet double procs and skoria actually procs damage from some heal abilities as it's DoT trigger

I'm looking at adding troll king I think it's called ... Got the set yesterday after hearing a discussion in group chat