I think we're all terrible at this sort of thing. It's exactly why I didn't make one when I first joined! Actually I didn't know about this place, but whatever. Welcome to the community! :)
I think the best thing to do when introducing yourself is to follow a guide or something. Like state your name, what you like and dislike, and your dreams and goals or something. I think that's what makes a good introduction for anything. You could say something like "I like two minute noodles, but I don't like the two minutes you have to wait after putting the water in the cup". It's simple, and it shows you like simple food, like noodles. Maybe they should invent something that is like, pull off the lid, and it's instantly ready or something. That'd make lives much easier for those who love to eat noodles all the time. :P
One more thing that you should remember, that whenever you're here doing anything, don't forget to bring a towel read the rules of that section, as well as the forum wide rules!