To sum up my writing process for stories usually goes:
1) I get an idea.
2) I write the premise of the story in a text file on my computer somewhere. It may see the light of day again, it may not.
3) If the story sticks with me, I expand on it. I flesh it out, figuring out a few more details, such as time period, setting, type, characters etc...
4) If I'm still interested in the story, I then outline/rough draft it. Mostly an outline. It reads like a wiki synopsi. I work on other aspects, such as world-building, characterization, and setting among others as I make my way through the outline.
5) When I have time, I rough draft it/revise it.
6) Edit for mistakes. This is both for grammar, and for story flow & structure. It may go back to 5.
7) Finish with minor formatting so it can be published.
I have one work that's made it up to 6. It's an RPG campagin. I need to finish it and get it through 7 and make it available. Most of my writing is in 4 and 5 with some still in 2.