I hate the word “flow,” I really do. But sometimes when you follow the above advice, the words just flow onto the page. There’s a good chance you’ll delete most of those words later on, but you’re in a much better position than simply staring at the screen, trying to force a vision that won’t come.
SKETCHING A STORY 
I agree. Age taught me to write notes downs and thoughts. Funny how a idea can hit the mind. We must write them down.