Painting is a lot like story telling. Some would say it is the same. I, personally see a few differences- but only a few. What I have learned is that with both you start out with an idea and an outline and then the darn thing takes on a life of it’s own.
And this too is true for both, some blossom and go forth to see the world while others (despite your vision) fail to bloom – these gather forgotten dust or must [sometimes begrudgingly] be destroyed.