Do you have 1 point in Imp. Judgement in the Ret tree? It should take your 10 sec judgement to 9, making it fit into the 969 rotation

Make 2 macros.

Macro 1 has a castsequence of Hammer of the Righteous and Shield of Rightousness. (the "6" abilities).

Macro 2 has a castsequence of Holy Shield, Consecrate, and Judgement of Wisdom/Light (the "9" abilities).

Now you don't have to worry about your rotation other than alternate between the two macros.

Keep the individual skills hot-keyed so you can use them out of sequence or skip one, etc., but for tank-and-spank fights, the macros are great.

If you are new to tanking, then you need all the focus you can give to keeping track of what's going on in the fight. If you keybind those macros next to eachother, you can literally just mash away both keys and it will maintain a 969 rotation while you keep your eyes on the mobs you are tanking.

I don't recommend this for all situiations, obviously, but if you're just starting out it will help you dedicate more of your brain time to what you are doing instead of how you are doing it.

The other thing I found handy is to bind a Hand of Reckoning macro to a mouse button (target = mouseover), so I can pick up any strays with one click.

Talenting Judgement down to 9 seconds or shorter stops that Judgement part of the rotation from going out of sync, and then you just need to make the Consecration part work by NOT GLYPHING IT. The glyph brings it up to 10s and your rotation will have a consecrate-shaped hole in it 9s after the last time you cast it. If it's not up at that point, you have to either skip it (boo!), idle for a second to let it finish and thus miss out on a whole second of casting time (boo!) or completely fumble your rotation and get some DPS players killed when their dots outthreaten you (*sigh*).