A sometimes outliner, maybe ... and long winded, too.
sunandshadow:
Hmm. My outlines, when I have them, are extraordinarily brief and don't always pass for outlines among writers who compose much lengthier ones. Many are just a paragraph. A few are a page or two long.*
Here's what I do:
When I get an idea I usually have a pretty good sense of whether or not it's one that'll support a story or not. If I think it will, or if I merely suspect it will, I jot down what I think is important about the story. Note that what I think is important varies greatly and may be anything from an acutely felt character or problem to the ever-popular spark of "What if?"
If I get this part right, if I pin down the essential nature of the story, whatever I think that essential nature is, and if I do that in just one paragraph or two pages, I have both the idea and the story and there's not much question that it'll turn into something finished that captures at least a little of what I originally thought I was after.
If I can't pin down the important matter of the story (perhaps you could read that as "material"), I realize it doesn't have one and it therefore won't support a story at any length.
For instance, here's the complete and unadulterated outline for a 5,400 word short story (now twice published):
I shall lock myself in an untidy room
put a razor to my skin
and remove it
The above three lines conveyed to me the essential nature of a character and a conflict, and it suggested to my brain story purpose -- a word I like far better than "structure", because it indicated having a clear idea of where the story was going as opposed to having an (/a stunting) expectation of what I merely thought should happen before I ever began. This is not to say that I had all ideas firmly in mind from the get-go based upon that sense of purpose, but that the story became largely self-propelled from that moment.
By way of further example, I wrote a 30,414 word novella as part of a proposed series for a publisher looking to start a line of horror novellas, and the outline for both the initial story and the series was originally written on about two pages of one of those 6-inch by 9-inch steno notebooks, which works out to about 86 handwritten lines setting up the initial series arc (all beginning and middle with no end because, hey, I wanted to keep getting paid), the main character, an indication of the kinds of stories that would be told and why, and the bare bones beginning, middle, and end of the first story of the series (covered in 30 lines of the 86-line series outline).
The original outline for a most recent novel was 30 handwritten lines in the same steno notebook and it hit the high points of plot from beginning to middle to, almost, the end. That was a 100,000-word job (more like 150,000 in the original draft) for a projected 75,000 word tale.
Thus it seems that in my world of working the outline is less important than the draft, but the draft doesn't begin until I pin down the essential nature of the idea, whether in three lines or thirty. Heck, sometimes I don't take a single preparatory note (which then puts me in the "do not respond if you don't outline" group, but writing sans notes is not the same as blasting off willy-nilly, so long as there is purpose).
I suppose what all this amounts to is: yes, sometimes I outline, but I don’t get too detailed. Or perhaps more clearly stated, I don't get too hung up in every detail, but rather aim for the important ones.
This seems to prevent getting stuck with an outline that doesn't work, or that I might find doesn't work once I've written a draft to a point in the outline in which I discover how shoddy the setup really was. If you find yourself doing that, no amount of tinkering with the outline or the draft beyond the point of oops will fix things until you go back to the (usually) much earlier parts that went amiss and fix those.
As far as brainstorming goes, that seems to occur when I'm writing the story, not the outline -- or at least more of it occurs during the writing than it does during the outlining. Perhaps that's because my outlines aren't as detailed as I suppose those produced by others are.
Concerning the matter of structure, templates, and so forth, I'm rarely aware of consciously structuring when I write. I mentioned story purpose earlier. That's what drives my stories forward, and it's from this sense of story purpose that the structure unfolds, rather than from a consciously preconceived plan. After all, my outlines, when I have them, are less about when specific things occur and much more about what few things must occur.
Sometimes I've noticed patterns in my work as I produced it, but I'm certain that most writers will, and that they will because they've read bunches and bunches of stories, thus making it easier to notice that, ah, this one reminds me an awful lot of that other one by whatsisname.
Concerning the notion of testing your ideas to see if they are the best possible way to present a particular story: if you figure this one out, let me know.
My contribution here is that the one thing I've noticed is that once I have a sense of story purpose (others refer to this as the story voice), the blasted thing takes off without question. When that happens I'm on the right track. All I have to do is write the story down, a.k.a. take dictation.
Then, when I have a draft I don't mind showing anyone, I show it to a few beta testers first, folks I've known a long time and who have read a bazillion more books than I have and who aren't afraid to offer unvarnished opinions. They understand the genres in which I work and many more in which I don't. I understand their opinions and value them highly. There are three of them (beta testers, not opinions, ha ha), and when they all agree I'm either in trouble or about to make a sale.
So it goes.
Hope this proves useful or entertaining.
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Note from first paragraph:
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*I've written longer, superbly-detailed outlines. Not a single one of the stories resulting therefrom was any good, and not a single one of them has sold.