Some points need revision. Like "You're not shooting RAW" and giving the reason that you get more information as support is bogus. Many times more is just more. See Will Crocket for why your skill increases when you shoot jpeg's.
@plasticpilchard Always remember photography is about enjoying all experiences of making the photograph. As Bryan Peterson uses this tag line, "You Keep Shooting."
http://www.photoventure.com/2013/06/20/55-reasons-photos-arent-working/
Enjoy!