Your piece is boring, but it is not poorly constructed as far as I can see. I am no expert, don't trust my opinion. Consider it if you'd like. There are really good ideas in the piece. I like the beginning as well as some of your development with the violin melodies. However, I would not place the harp melody in the foreground because the violins will drown it out. The harp is not a loud instrument Mezzo Forte at best is my guess. You would probably be much more satisfied with your piece if you tried developing some of those creative rhythms and melodic ideas you stated earlier on. Keep it up - I'll look forward to hearing what you do.