Start with planning. Plan your characters. Give them names, character traits and quirks. Now write a profile for every one of your characters. Are they male or Female? Who is/are the Main Characters? What is there relationship to the Main Character? Get to know all your characters inside out.
Now create your location. Research your character Do they work alone or with others. How do they accomplish their work?
Once you have gotten to know your characters, write a synopsis for your story. Introduce each character and hoe they fit into your story. If there are any complications, show them now. Show how situations and complications are pushed to the limit. Add conflict and drama. Then intensify to reach a climax. The story is resolved and the characters have reached either safety, enlightenment, a point of growth or death.
Next write a Template. Structure the events. Show how your theme is being proven. Show subject, content and the point you wish to make. Give your readers enough information necessary to understand the plot. Include twists here and there. These twists however, must be unexpected, logical and consistent. They must have a beginning, a middle and an end. When you end your story, all threads must be resolved. clues inserted throughout the writing must not be revealed. However, there is an exception. If you plan to write a series, always leave a cliff hanger.
Now on to your outline. List each character and include five or six events that are to take place in their journey. Don't waste time describing your character in death, but your reader needs something to identify them with. Your reader will benefit more from active description, but do so within a few lines of introducing this character. The less description the better. Let your reader's imagination do it for themselves. You will need to know all there is to know about each character, but suggest just enough to get your reader's imiganation going. have a major effect on at least the Major Characters. There decisions and actions should affect the plot.
Last comes your plot. The Plot should. They should go through a change between the beginning, the middle and the end of your story. Both your characters and the plot need to go through some sort of change throughout the entire story.
With your Template, Outline and Plot in hand, you are ready to write the story. Stick to these three plans and your writing should write itself.