We can see how our characters will look in WoD (with new models)
Go to http://wod.wowhead.com.
From the main menu > Tools > Profiler > click on “Lookup Battle.net profile”.
Select the region, your realm, and type your character’s name.
From the page that will open, you will be able to see how your character will look (with your current gear), using the Warlords of Draenor model.
If you want to see how you look with different gear, maybe no helmet, just switch the gear from your character in WoW and restart the game.
From your profile from wod.wowhead.com, hit the update button and then on reload.
You can double click on your character in order to make the window fullscreen, select different animations.