Above points are very good. I would just like to add my 2 cents.
From reading the reviews on my stories I have come to understand that the readers love a good build up, they want to get to know the characters and what drives them. What I find the most fun in writing is how to get the characters "in bed" with each other, the seduction, or teasing, or whatever means they use to have sex should , in my opinion, reflect on reality.
