Writers are often asked, "Where do you get your
ideas?" The answer is easy: ideas are all around us.
You discover them in what your read, what you hear
(writers are notorious eavesdroppers), in what you see, and so many other
places. But an idea is not a story. An idea is the germ of a story. It's what
gets you asking, "what if..."
The next step in the process is creating
character(s), a plot and a story location. There has been argument over which
is more important--character or plot. In my opinion, they're equally important.
You can't have one without the other.
For instance, you want your main characters to have
substance, not be paper cutouts. Readers can relate to a realistically
portrayed character. So how do you do that? You give them lives. You describe
them, their characteristics, their personalities. Many readers are turned off
by two much description. Some want no description of a character so they can
employ their imagination as to the character's appearance. My feeling is it's
your story. Their imagination may not match your vision. That's why I prefer to
describe my key characters.
Others will quote Elmore Leonard's famous 10 Rules
for Good Writing, citing Rules 8 and 9, which tell you to avoid detailed
descriptions of characters and not to go into great details describing places
and things. The important points are "detailed" and "great
details." He doesn't say don't describe. Read Leonard to see how he subtly
introduces characters and place, so aptly we feel we'd recognize the character
anywhere and know the place even if we've never been there.
So you don't want to give them everything about your
character in one lump. Introduce details gradually throughout your narrative.
Now, as to plot, this is the narrative of your
story. It introduces the crime, the detective, the investigation, discovery of
the motive(s) and, eventually, the identity of the culprit. Some mysteries
disclose the identity of the killer at the beginning, but I think that takes
the fun out of the story for many readers. Most like to try and outsmart the
writer, determining the identity of the criminal before it's disclosed by the
writer. Traditionally, mysteries started as this type of puzzle, providing
clues through the narrative to lead the reader to the conclusion. Being the sneaky
people we are, we throw in red herrings (misleading clues) to throw the reader
off the track as well as sub-plots to add a little more substance to the story.
This is how an idea becomes a story.