My GMs been on my back lately about my damage while tanking (he's a prot warrior, with a very low attitude toward prot pallys). I'm already hit and exp capped, and have been stacking haste, just not sure what else i an do to improve my damage. Any advice would be much appreciated.
"edit" first log link removed, wrong teams log
Your trinkets are sub par for Prot, the valor trinket is far and away superior to Relic of Niuzao as far as stam trinkets, and either of the haste trinkets are superior to Stuff of Nightmares, honestly a haste/expt/mastery Ghost iron Dragonling would probably be an upgrade over either of your trinkets.
Colossus is a garbage weapon enchant, both windsong and dancing steel depending on what you can afford are significant upgrades over it
those are two things I notice immediately.
And if you're really serious about min maxing your stats you need to drop mining if its at all possible(have an alt do it) and pick up a second crafting profession.
Finally stam isn't an important stat, you should never gem for it when you have alternatives(blue sockets can be fitted with haste/hit green gems for example)