Arrange your notes into groups of related ideas and information according to the subject headings of your informal outline. Each group of notes will correspond to a main point or idea that supports your thesis statement.
If a group of notes looks skimpy, perhaps you need to either add more support or eliminate that point.
If most of your notes fall into only one or two groups, perhaps your ideas or points are too broad and need to be divided.
Within each group of notes, identify the main ideas and supporting ideas. Arrange them accordingly.
Some writers color-code their notes according to main points (a red mark or check for the first point, a green for the second point, etc.).