Your belt has a spirit reforge for some reason. Your hit is too high. A weapon will make a bigger difference than any other slot for you. A LOT of ret dps relies on the weapon.
If you are trying to eeke out every last bit you can, I would recommend two things. First, download simulationcraft (http://simulationcraft.org/). Next would be to learn and then grow past clcret.
Simulationcraft is a highly accurate simulator. Learn to import your toon with the proper settings and determine your true stat weights with your current gear. Set all the buffs/food/flasks to be accurate for your raid group and simulate at least the 10k times setting to reduce the margin of error from random chance. From there, enter the stat weights it gives you into askmrrobot.com to get the best reforges. For ret, my crit and mastery have been swapping places depending on my gear and yours might be doing so as well. That difference will be marginal, but you indicated you want to get everything out of it you can.
Clcret is a really good rotation helper for ret. You will want to understand what it is doing and why. For instance, it does not add Execution Sentence to your rotation. That is fairly easy to modify with a little research. Compare it's rotation priorities to the priorities list in simulationcraft. You should be able to see how they match up and where Execution Sentence belongs in the rotation. I hesitate to simply tell all because you want to "evolve" away from relying on clcret if possible. Learning how to determine when it is wrong or not optimal is important and probably won't happen without you having to research and learn some of this. While clcret is very good, the best players can react and predict even better than it can. How long you should use it just depends on you, I suppose.
Also, you will want to be familiar with when Divine Storm is worth using over Templar's Verdict. When Hammer of the Righteous is worth using over Crusader's Strike. Also when Seal of Righteousness is worth using over Seal of Truth. Also, when is the Mass Exorcism glyph worth using in a fight.
Be aware, most of the top log parses you see will be skewed and should only be taken with a grain of salt. Most of those have been cheesed in some way with the specific goal of getting that top parse. It takes a lot of analyzing a log to be sure they are not doing so, and I typically assume they are unless someone can prove otherwise. I like using the simulationcraft dps estimates as a guide for how close I am to my potential. They are not perfect, but at least I can rule out 9-24 other people trying to artificially inflate it. It does seem like you have potential to increase your dps considering your gear.
Are you already using clcret? Are you keybinding? Are you generating logs on World of Logs? Do you have an accurate measure of your time on target? Are you being asked to use any utility that may effect your personal performance?