I've been writing out an analysis of a Vaughan Williams piece to get a better handle on some of the rules. (Because I know nothing and the examples in my theory book aren't enough to pound the information into my tiny brain.) Conclusion: Vaughan Williams breaks most of the rules about half of the time, but it all still works. He follows the rules when they are helpful and gleefully chucks them when they aren't. On the other hand, I analyzed a nice quiet little Lutkin piece. He follows ALL the rules to the letter. I like that piece too, it's just a different style of thing. It all depends what you want as a sound. You just need to figure out what you want and how to achieve it. (I haven't got the ear skills to tell you what's going on specifically in your example piece though. Sorry.) (: