1) Start. It doesn’t have to be good, you don’t need a full plan. Just start writing. Set up a scenario and play with it.
2) Keep going. Even if it’s just a sentence a day take a moment to add a bit.
3) Tell yourself the story. You don’t need all the details and twists planned ahead of time. Surprise yourself
4) Edit. Once the first draft is done then take a break, go back and read through the story. Now is the time to resolve plot holes and issues.
5) Do something else for a day or two
6) Go back and work through the story again. Now is the time to give it to a second set of eyes.
7) Read it out loud. You’ll figure out why.
8) Now you can start thinking about submitting to publishers