Writing

Well, I've sent out 6 query letters and I have already decided I like writing the books better than asking people to publish them. But their is no choice. I have spent so much time writing it, I have to at least try. So I plug on. My goal? 100 Queries. I've gotten one rejection so far, so only 99 more to go.
I was just reading one of my favorite sites, Query Shark and she stated YA books have teenage charactors. I'm not sure how this affects my book, my main charactor is 20 ish. We will see.