I'm in fairly the same position as you are. Never lose consciousness of who you are messaging and what you say to them. I'm not looking for a dominate partner- I'm simply interviewing others in the BDSM community and am exploring my kink. I understand your fantasies but the world is a dark and disturbing place. Be wary of your situation and be sure to not give yourself or your private information away so easily. Be patient, too. A perfect dominant isn't going to appear out of nowhere. Get to know a person first.
But I must advise you yo ALWAYS be cautious when you are on the internet- especially in a place like this. Don't accept things so easily. Question them but keep your interests open.
Good luck on your endeavours and stay safe. I hope you find a proper dom.