Hon, you get starred by earning it. Asking, "How to be succesful as an asker" unfortunately will not give you many stars.
Think about things you don't know and want to know. Something that highly interests you and you think might interest others, too. If somebody thinks your question was enjoyable and highly fun to answer, they might just give you a star.
But to be sucessful as an asker, you must be sucessful as an answerer. If you have gotten a "best answer" more than 10 times, I think you can be a highly sucessful asker. ;)
Everybody has had a first question. But did everybody get starred on their first question? I don't think so. I'll be some people who have an account for as long as Y!A has been here haven't ever gotten a starred question. You need to know what type of things are easy to answer and don't offend anybody. Also, you probably not going to get starred by asking, "Why is my mom being mean to me?" or "My teacher favourtizes everybody but me!" They're not the most interesting things to answer, but you can get a lot of help from them, and that is the point. Not to get starred.
Good luck with your answering and asking! I hope I helped!