Basic Rules to be a Blues Musician

I was wondering what I was missing here and now I know:

"1. Most blues begin "woke up this morning."

2. "I got a good woman" is a bad way to begin the blues, unless you stick something nasty in the next line.

I got a good woman,
With the meanest dog in town.

3. Blues are simple. After you have the first line right, repeat it. Then find something that rhymes. Sort of.

Got a good woman
With the meanest dog in town.
He got teeth like Margaret Thatcher
And he weighs 500 pounds."

And with these rules I can find out where I'm going - sorry, goin' - wrong.