If it sounds like writing, I rewrite it.
Avoid prologues: they can be annoying, especially a prologue following an introduction that comes after a foreword.
My purpose is to entertain and please myself. I feel that if I am entertained, then there will be enough other readers who will be entertained, too.
Don't worry about what your mother thinks of your language.
I'm not going to write for posterity. I'm going to write to make a buck.
I focus on characters as individuals with attitudes and write each scene from a particular character's point of view. That way, even narrative passages take on the character's sound. I don't want the reader to be aware of me, writing.