When people talk to me about fiction writing they sometimes want to find out, “How do you do it?”
I reply along the lines of setting out my process, “I never stop learning about the rules and techniques, I come up with a storyline (the hardest part) and let scene ideas flow from my head to the keyboard as I sit at the PC and type.”
Which really doesn’t solve the mystery of it at all, not that I could explain it better.
Sometimes my subconscious works on the novel even when I’m not in front of the PC. It may come to the surface with semi-random bits and pieces of scene description or dialogue (not always at a convenient moment) and I have to write them down in longhand before I forget. That helps my progress in the first draft.
Or I might see ahead for 2 or 3 chapters and, in outline, write down a one-liner for what will happen in a properly sequenced way. I’m not one for having a total outline in advance.
That’s just how it works for me.