Magsorc healer advise

I am in the process of retooling my magsorc into a healer role. I have played healer characters for literal decades in WoW, but obviously ESO is much much different lol.

I am planning to play a 1 bar sorc. currently I have:

5-piece Orders Wrath

5-piece Prayer Shawl

Oakensoul ring

and I have one slot open.

As for skills, I am still trying them out. currently I have

1-Grand Healing

2-Regeneration

3-Circle of Protection

4-Twilight Matriarch

5-Annulment

Ultimate- Nothing yet

Any insight would be appreciated.

EDIT- So my job as a healer is....not primarily healing.... but buffing allies.....

That just sounds weird to me lol.

I threw this together assuming my job as a healer was, ya know, to heal people lol