Do you need some help with your World of Warcraft Keybindings?

The only real sure-fire way to increase your DPS/Heals/Tanking Threat is to learn how to use keybinds.

If you want to see what the difference is like, go to a training dummy in any major city, and start to auto-attack it. Now start to go through your normal rotation, and see what your damage is like. Now, try your normal rotation, but totally with clicking (not using any keybinds). See a difference? Told you so.