There are numerous effective ways to organize your discussion. Consider the goals that you want to achieve with your presentation and the major points that you want to make. In general, ensure that you effectively emphasize and support your major points and that you provide a discussion that is clear and easy to follow. Give an overview at the beginning of each major section and a brief summary at the end of each major section. Provide transitions and connections between sections.
Consistency is key here.
Employ a consistent format. It should look as though the individuals in the group worked together on the presentation not as though you each did your own part and then slapped them together at the last minute. You obviously want to effectively convey the major aspects of your analysis. To do so, strive to thoroughly and carefully explain all concepts and analyses employed. As noted above, provide brief overviews at the beginning of major sections and brief summaries at the end of major sections.