There are a variety of outlining methods, and which one works best depends on individual preferences and organization styles. Here are four of the most popular methods to try:
The Synopsis Outline
This is a 1-2 page document that roughly sketches the structure of the story and leaves room for flexibility. It hits all the major plot points but does not go into great detail on scenes or character arcs. This method creates a loose framework that can be further developed while writing.
The In-Depth Outline
This is a comprehensive chapter summaries that break up individual scenes. It includes detailed timelines, character details, plot points, and subplots. Scene-level description is usually not included, but full character and plot arcs should be developed with major pinch points noted and the scenes they are included in pointed out. Particular attention should be paid attention to flow between scenes and pacing of the overall arcs.
The Snowflake Method
This method begins with a one-sentence summary of the story idea, then builds into a paragraph, which is then used to create character descriptions and storylines. The structure remains fairly loose and branches into different story aspects. This may be especially helpful for storylines which are not fully fleshed out yet and are in need of brainstorming.
The Bookend Method
In this method, you begin by plotting the beginning and end of the story and the main characters, leaving everything else to be develop during the story writing. It is important to consider how the beginning and ending relate to each other and whether there is a meaningful link between the two that is believable and achievable. While this method does not detail out the steps between the beginning and end, you should have a sense of what steps will be needed to bring the two together.
Regardless of which method you employ, stay focused on creating a strong flow from beginning to end and pacing that will maintain the interest of the reader.