Forum:How do I make new userboxes?

I have a few ideas, but I don't know how to get them made. Do I have to ask an admin, or can I make them myself? I would like to know, If anyone has a definite answer. I would really just like a friend box made for me, because I'm a nice guy and I'd love if somebody wanted to be my friend, but they can't until the userbox is made.

Here, I made a userbox for you:

and it would help if you put your signature after your posts, as it would help other users find you easily.