Larry Brooks on the merits of outlining the plot of your story and just winging it:
Pantsing plotcan work. So can outlining plot. Either way, the process is nothing more or less than the search for your story’s plot and the optimization of it. Both methods are nothing other than development vehicles and both offer a creative return, though different.
But here’s the deal. What basic, fundamental awareness of story architecture and the principles of structure are you bringing to your process, no matter how you choose to go about it? If the answer is plenty, then either method leads to a great story.
If you’re just winging writing a novel, if you don’t really understand the principles of story architecture or if you reject them outright, then nothingworks. It’s like a building with no proper infrastructure.