Lord, I wish I felt I had the authority to provide help on fiction. I’ve written one memoir, one young adult novel, and now am on to the next young adult novel (the first YA novel, “Great,” is out in April 2014 from HarperTeen; the second, “Believers,” is out in early summer 2015. The memoir, “Agorafabulous” is out noooooow.) I’m still very new and stumbly when it comes to fiction.
Go see what Neil Gaiman has to say about these things. He’s about the best source of advice I have yet found on writing fiction.
Good luck, but more than that, good work.