I think these rules are quite useless.

3 Spelling and grammar is not important at all I had chance to read and still enjoyed stories that are written in a way that you need to use all your brain power do decipher what these words mean.
As long as you understand what you wrote it is OK to publish.
9. Who cares about accuracy in fiction, you do not need to have university degree in enema fetish to include that into your story.


However there are other important rules. Writing is just like marketing:

1. Choose your audience.
If your story is intended for pussy readers do not include hardcore scenes, and if your target audience is serial killers don't waste time on cuddling and kissing.
of course it can be somewhere in-between but it still should maintain appropriate level.
You need to provide what your audience desires. Trying to please everyone will result rejection by everyone.

2. Be original, if that specific combination of fetishes is already overexploited then there is little chance that something will be interested in some newbie crap when we have zillion of perfect clones polished by highly pedantic writers.

3 If your story is pure porn do not waste time on anything just write your fantasy and forget it.
I would recommend even to avoid reading what you wrote, or else you may find you work so stupid that it will be shameful to publish.
Porn is not supposed to have any complex plot it must be just lot of action glued by some reasons.
(I was completely unable to write essays at school just because everything I wrote was just to stupid or me, while my mother had no problems to spill many pages of crap while helping me to do homework. Also we all know that all Hollywood movies are examples of top stupidity but people still pay to see them )

So that should be primary rule:
Do not less thinking more doing.


For more specific information about story writing I recommend page http://tvtropes.org
also http://comicsworthreading.com/2006/0...an-draw-manga/ comic book may be interesting.