I don't know what the "healing taken from" stats are about. When I click on it, it says "healing done on" which suggests that it was healing that you received, and this is supported by other healers being below Warlock. I referred to the Healing by Spell tab, and also clicked "analyze - analyze (there is an arrow) healing done. I should really learn how to interpret these logs....
Alright, now I'm seeing excessive flash heal use compared to PoH and PoM which should both probably be higher. Prioritize Penance over Flash Heal for fast healing when you can. I save it for when penance isn't off cd when it looks like a player will die without a fast heal. Use Greater Heal and Binding heal when you can afford the longer cast, though you don't necessarily have to use Binding heal...it's just efficient when you are also taking damage. Lots of Greater Heal will boost your hps. Flash heal is very expensive to use, so that is why you were going oom, and it heals for more than Flash Heal. All I meant earlier when I said that you can "afford" to Flash Heal more, is that you have enough mana that you can get away with using it if you have to, when players may die
For single target heals I do this
a) player going to die unless I heal now? Shield, use penance if it's off cd, Flash heal if not
b) Player is not going to die, and needs a big heal? Penance (I use it pretty much every time it's off cd but pr), Greater Heal
c) You are also taking damage? Binding heal
d) Pain suppression on the tank during high damage single target phases, and also some heavy damage AoE
e) Player likely to take damage? (e.g., you see that they have aggro or a boss ability is on their raid frame) Shield. I throw quite a few around since most players are going to be taking damage in the near future
For AoE - I use Barrier and DH only for the "oh shit" moments
a) Barrier if stacked. It has a long CD so use it wisely. I save it for the highest AoE phases
b) PoM the tank on cooldown, every time it's off cd during AoE damage. This is an amazing spell
c) PoH my arse off...repeatedly. I often pop Power infusion at this time
d) Penance for filling up very low health players that are unlikely to live with just AoE heals. Rarely Flash Heal, only if Penance isn't free
e) Divine Hymn for heaviest AoE periods
For high movement phases (like Hagara) I do all of the above
a) Shield
b) PoM on cd
c) Renew (the ONLY time I ever use it in PVE, other than movement it's not efficient. Don't use it often, it's not worth it)
Just before incoming AoE I do all of the above
a) Blanket the raid with Shield, or the players most likely to take damage
b) PoH repeatedly for Aegis
c) PoM
Are you only using PoH to stack aegis? It's really good when cast repeatedly during aoe phases.
You are still only active 77.3% of the time. What are you doing during those periods? Is this from going oom, or do you find that you're slow to heal for some reason? With higher mastery you will have slower cast times, but that does not account for the low uptime. Are you using mouseover macros or a healing addon? Healing non-atonement is essentially whack-a-mole. You have to react quickly
Your glyphs/talents still need adjustments. Desparate prayer doesn't seem to be getting enough use to justify the talent points. Read my above suggestions.
Don't forget to macro Inner focus, and make other macros or use clique. Replace your regular heals with them. Read up online about macros because there are lots to learn, but once you get the hang of them they are easy.
(replace Greater Heal with this, and I did the same with Flash Heal, and PoH, just replace the spell name "Greater Heal" with whatever spell you are using). This may not be the best macro, but it's what I use
/cast Inner Focus
/cast [@mouseover] Greater Heal; Greater Heal
I have the /cast [@mouseover] macro on almost every spell. I have very few spells left that are not macros. Clique, from what I understand, helps you to make macros, but I've never used it so I don't fully understand how it works. Grid + Clique or Vudho are addons that you should get for sure. Decursive and Deadly Boss Mods too
I think it may be time to post this on battle.net so that decent log interpreters respond. I'm sure that there is information that I'm missing.
Read through this carefully. This guide is written by a very good Priest who is extremely active on battle.net (she will likely respond to your request for help)
http://us.battle.net/wow/en/forum/topic/3229375010
---------- Post added 2012-08-10 at 09:09 AM ----------
Yes...you need the PW: S glyph; it's your most used spell, and the glyph is awesome. You still have inner fire, and some subpar talents given your usage. Read my above comments, make the suggested adjustments, and see how that affects your healing.
---------- Post added 2012-08-10 at 09:53 AM ----------
omg so much text