casting moonfire and sunfire once per target is the worst thing you can do. You need to keep moonfire and sunfite on the primary target. If more targets come around, you should apply sunfire on your main target, so it spreads out to the surrounded targets. Basicaly, you should check if all the tagets in a range of 8 yards from your primary target have your sunfire debuff. If not, cast it again on your main target.
On less than 4 targets you should only cast Solar Wrath and only use starfire on proc. Once more than 3 targets, use starfire en use solar wrath on proc.
Cast regrowth and check if you have the buff before to cast it again.
You should not wait to cast Barskin at 20 %, cast it at 65 %, it's a protection skill, not a life saver. In any case, you should cast it before you need regrowth or you cast it when, you have the regrowth buff.
