Hi there!
I'm one of those character approvers Lynn was talking about. Ignore anything you hear about me - I'm really quite nice! *hides his Editorial Scalpel+2*
Basically, read
LORE, have a look at
Recent Approvals, and then the stickies in
Character Submissions, and then you can avail yourself of the quite lovely
Character Submission Wizard.
And then the fine Character Approval staff will give your submission the once-over, suggest any necessary changes to fit with LORE, the rules, or internal consistency, and after the edits - hey presto, you're in!
Good luck!