There is no "cookie cutter" Holy spec in the typical sense, since there are more good talents than there are talent points to spend. One thing I recommend about your spec, is Healing Prayers - the mana reduction of Prayer of Mending is nice (since it's one of those spells you usually want to use on CD), but the real biggie is 20% off Prayer of Healing, which is one of the most expensive spells you have. I'd recommend speccing into it, maybe take a point out of Inner Focus and a point out of Empowered Healing or something.
Another thing to consider is the Guardian Spirit glyph instead of Renew - having GS every minute is fantastic.
Your gear and gems/enchants look good to me. One thing I recommend as Holy is having an addon (I use Alert because I'm too lazy to learn how to configure PowerAuras) that lets you know when you get a Surge of Light proc. Knowing when you have an instant Flash Heal is very handy.