It is a fun process for me.
I start with an outline plot but the story leads me day by day.
I write first thing in the morning. A minimum of 500 words, maybe more if I'm flowing, but that is my minimum. Then I leave it and do other work or articles, blogs etc.
Come bed time I read what I wrote earlier. Then sleep thinking on it and what to write in the morning.
Then start again. Each day until I'm done.
I leave it to stew for about a month.
Now the part I hate as it can bore me.
Then I'll read through it about 3 times, editing as I go.
Then I send to a proper editor for content, continuity, style and grammar.
When they are done with it I read through again to make sure they've got the characters/story how I want it.
Then it's off to the publisher.