'Black Swan' does what Hollywood movies have always done - it spends its energies on getting some surface things right while getting everything important wrong. Darren Aronofsky, the director, applies the same techniques and the same sensibility here as he did with 'The Wrestler,' only with a prettier protagonist.
Your protagonist is your reader's portal into the story. The more observant he or she can be, the more vivid will be the world you're creating. They don't have to be super-educated, they just have to be mentally active. Keep them looking, thinking, wondering, remembering.
With my earlier books, I got quite bored being with one protagonist all the way through. With the Alex Morrow books, I wanted to do something a bit more holistic, so there were lots of different points of view, and I wanted to look at aspects of crime that you don't tend to look at.
The way I wanted to write it, is with a hero, or sort of a pure character who was the protagonist. And the antagonists were these demonic evil children, cause when you're a kid, seven or eight years old, and you're looking at the world around you - everything seems black or white, good or bad.
A lot of crime fiction writing is also lazy. Personality is supposed to be shown by the protagonist's taste in music, or we're told that the hero looks like the young Cary Grant. Film is the medium these writers are looking for.
Perfect heroines, like perfect heroes, aren't relatable, and if you can't put yourself in the protagonist's shoes, not only will they not inspire you, but the book will be pretty boring.
Henry Miller wrote novels, but he calls his protagonist Henry, often Henry Miller, and his books are in this gray area between memoir and novel.
You can, I think, have a quiet and steady protagonist and not run the risk of terminal dullness as long as exciting things happen to them and around them, and crime is the ideal genre for making this come about.
In most films - especially in regards to the protagonist - really from the get-go they set up some scenario that endears that character to the audience. Or imbues him with some nobility or heroism or something.
First person allows deeper insight into the protagonist's character. It allows the reader to identify more fully with the protagonist and to share her world quite intimately. So it suits a story focused on one character's personal journey. However, first person shuts out insights into other characters.