So, by now you should have your characters named and know a bit about them along with a general idea of what's going to happen in the story.
But, do you know your setting well? Have you spent time building your world?
If you are using a "real" place you can use maps and traffic light cameras and such.
However, if you are creating your world, where the heck do you start? Here!!! This is a "fantasy" world building questionaire but many of the questions apply to all world building.
This is another item I've copied and saved. I've not printed it out yet cause I think it's about 56 pages of just the questions and if you left space for answers it'd be lots longer. I do consider these questions as I build my world though.
So, get to world building!!!