Describing characters is more than just a list of bullet points (like six feet tall, overweight, shaggy hair and dark eyes.)
More AVPM/AVPS/AVPSY fanfictions please.
Les Mis fanfic writers: more French Revolution, less overrated drama and romance.
Enough of using social media (like Omegle and kik) to anonymously meet your favourite celebrity.
Prologues which are more than a 750 or so words are too long and probably info-dumpy.