How can I grow my youtube channel?

[James]

I need help on how to grow my youtube channel other than the basic things like put in hard work and upload constantly ect. I upload CoD videos, usually zombie gameplay as a backdrop for my ranting. I occasionally upload multiplayer gameplay. So you know what i mean if you still don't understand it from my descriptions my channel name is: IITwisteyII and url is http://www.youtube.com/user/IITwisteyII?feature=watch so ya. I just want to know what i could do to gain more loyal subscribers; catchy titles, great gameplay, what? Thanks ahead of time