At the risk of sounding both ignorant and arrogant, I don’t much have one. I sit down, lay out a basic plan for what’s going to happen, and start writing. As I go on, my story structures itself and this almost never leads to problems. I will occasionally read over it a second time to check for grammatical errors or oddly formed sentences, and then it’s done. Not sure how or why, but this writing process is actually favorable in my opinion to a more rigid structure. In fact, I’ve written stories before where this method heavily favored the writing style and were crucial to the feel of the story.