User blog:HellFire707/Quick Question. (About the Categories)

Hiya guys, it's me again obviously, but I got one last question, as I'm.... relatively new to the wiki, and although I'm starting to get the hang of things, I want to know how to make a new catagory page for my OCs, so no one gets mixed up on who they belong to. I noticed a lot of OCs on the wikia that aren't owned by me are put in catagories, such as Kouryuu524, he got the right idea. So any tips would help. Thanks!