Nice introduction to the plotter / pantser topic! :)
I'm working on a novel at the moment, and it started very similar as to what you describe as your own process of a story evolving. With first a character and a setting and then a theme. I wrote the first draft just sitting and typing and enjoying the process of following the flow of ideas and expressing them in words.
After that first draft, I felt the storyline had potential, and wanted to improve on it. And found Jessica Brody's 15 beat story structure, and put it next to my own story arc. Having a more detailed framework on what to have where is now really helping me to get rhythm into my story. And in reorganising things, I feel things are improving big time. It's something I could recommend to other pantsers! :)
This is great direction, @amritadeva. I think writing a novel really does take that kind of orchestration. Evidently Faulkner wrote As I Lay Dying in a period of six weeks, with no edits. The reason that's so famous is because it's so rare!
I found the Jane Brody resource you mentioned - How to Outline Your Novel with the Save the Cat Beat Sheet. Thanks for sharing that info! What a gem!