http://www.mmo-champion.com/index.php?topic=22826.0
For startes, go have a look in this thread, its the pure basic stuff most of it, but there is some outline in what you should try and aim for, in terms of gear and enchants.
key elements i se you can improve
Get your last major glyph.
Take a good long look at your talents, some of what you have picked isnt really helping you in terms of tanking.
Start filling your gear with enchants, leg, shoulders and head could do with some of that.
Hope it helps, just a bit