Good tips except I don't think it's necessarily so important to fit a genre completely, as long as you make it clear when you are marketing. Some of us love to read books that push cookie-cutter genres that traditional publishing puts out.
The Walls Around Us, Nova Ren SumaThis powerful psychological thriller goes places few YA novels go — a juvenile detention facility, for one, where girls convicted of murder unravel the truth of their pasts. The writing in this one is on fire. #refinery29 http://www.refinery29.com/2015/06/88523/young-adult-books#slide-14