For all teenagers. What do you think of my writing?

You definitely write well and I liked the intertextuality with the Bible (Noah, Sinai), it shows you have some culture. I just hadn't enough of your text to know that your plot is a good one; I couldn't quite get the essence of it -- I confess it made me curious, though. But once you develop your story, and if your ideas are in fact interesting, I believe your book might do well. :)