Great lesson Jan! I've broken all of these rules and lived to tell about it.
For example, in this opening paragraph, I broke #3, twice. This challenge entry was an Editor's Choice. (I also just saw, for the very first time ever, an extra word in the 2nd sentence )
"Although she was very aware of his reputation, Lydia had never actually met the Big Guy. That she would be asked to dine with the him? The thought had never crossed her mind. But he issued the invitation himself--in person. And Lydia giddily accepted. "
And here we see me shatter #4 - Also from an EC winner:
"Most of the brilliant red and gold outside Marta’s windows had faded and withered to drab, dying shades of tan and brown. Like her spirit. Like her life. "
I'm interested in your opinion / teaching on long sentences. I LOVE to write long sentences, but most times I break them up when editing (often upon protest from my muse).