Don't sell yourself short; dare to dream. You might sell to a top market before you ever sell to a non-paying market - you won't know unless you try. In the same way, it's good to be cooperative, but don't be too humble either.
The work never matches the dream of perfection the artist has to start with.
Film as dream, film as music. No art passes our conscience in the way film does, and goes directly to our feelings, deep down into the dark rooms of our souls.