Structure
As with any piece of extended writing, structure is crucial. There may be specific guidance on structure within your department, or you may need to devise your own.
Examples of ways you might structure your literature review are:
chronologically; although be careful not just to list items; you need to write critically, not just descriptively;
by theme; this is useful if there are several strands within your topic that can logically be considered separately before being brought together;
by sector e.g.: political background, practice background, methodological background, geographical background, literary background;
by development of ideas; this could be useful if there are identifiable stages of idea development that can be looked at in turn;
by some combination of the above, or by another structure you create.
There are many possible structures, and you need to establish one that will best fit the ‘story’ you are telling of the reason for your study. Once you have established your structure you need to outline it for your reader.