An observation:
I, too, have noticed that there seem to be many more subs than Doms here...yet I can enumerate at least 5 Doms I've become friends with over the past year who have specifically been looking for a sub and not finding one for themselves. My perception was always that they were tripping over subbies everywhere they turn! It seems that some of the ones who are seriously looking don't really advertise that fact because they don't want to deal with the onslaught of sorta-subs, wanna-bes, etc. So the advice above to just get to know people is correct. You'll find the one who's right for you by treating them as people first. And in the meantime...read as many posts by Doms here as you can. You'll sort out the wheat from the chaff, figure out which ones have something to say that you want to hear, and learn more about yourself along the way. Which is always a good thing.
And I know it's trite...but sometimes the connection with your future Dom comes right out of the blue. But by having read His writings beforehand...you'll know something about Him and who He is and how He thinks and goes about His 'domly' business.
