Sadly it just seems that demand for magic doms far outstrips supply. I play a witch with reality-commanding powers that work like computer programming with the source code of reality. After some thought I realized her magic works somewhat like the stuff in Eragon. I don't even play with my regulars that much anymore and anytime I sign in I get mobbed.
I won't post f-list, since I doubt I'd have time to serve more of you, but let me offer a suggestion of how to catch someone like me. You have to answer a question:
Why would your character be fun for my character to play with?
In my case, my character is a sadist who likes doing things to people just to watch how they react. If what you offer is "My character looks like this and I want this to happen to them." Then I obviously won't have any interest.
A key important feature is for your character to have a well defined personality in your head. I want a character I can throw things at and wait for the response eagerly because I don't know what exactly the response will be. Don't spell out exactly how your character will react, especially to the exact thing my character is supposed to do to them.
I really want to offer more positive advice, but it's really more of an art than a science, so there isn't some "correct" formula.