The more I write, the more I learn that the process is about rewriting, not as much as writing. Yes, we need a plot, and good characters and all, but we can have that, be a terrible rewriting, and get no where.
That is partly why I find this post particularly helpful.
Don’t tell me the moon is shining; show me the glint of light on broken glass. ~ Anton Chekhov
Think about that for a moment. That gives you more than enough of an idea about how to go about rewriting.