Just a quick note regarding my previous post.
It is perfectly true that not every rule applies to every situation. The fun part of being a writer is figuring out when you should stick to the rules and when you should ignore them.
With the "rules" I listed last time I would like to make the following observation.
"Always" rules are generally things that are best practice. Sure you can ignore grammar and spelling and tension and building interest in your character, but chances are you won't want to MOST of the time.
"Never" rules are generally things you should avoid because they are A) cliche or B) the product of lazy writing (even if it's inadvertent).
That is all.