I'd suggest writing out a short summary of what you want to say--in rigorous form. Include the needed details and references and quotations.
Afterward, make an outline from your summary. To make the presentation, speak freely from the outline. You might even want to distribute copies of the major topics in the outline.
This enigmatic formulation corresponds, in fact, to a very simple idea: to identify for what reason this presentation is made. And the excuses, "because my chief asked me" or "because someone has to do it" are not valid. We must find out what interest this demonstration has for its public. It is the element which, once determined, makes it possible to derive the conclusion directly from it. It is a question that seems simple but that, in fact, requires to engage personally. This red thread is to advance in the first few minutes of his speech, the crucial moment to catch the attention of his audience.
2) Continue through the end
These are the words the audience will remember when they leave, simply because they are the last. Determining his conclusion, from the beginning of his work, will then allow to have in mind his point of arrival. "If it sounds superficial or simply difficult to do, it is probably that you did not do well the analysis work of the first stage. The "why" of your presentation is still poorly identified.
3) Find the anecdote that hits
Storytelling is a well-known technique of public speaking. It is a question of recounting it by telling it in the form of a story. The audience then feels bound by emotion with your speech, and this makes it more dynamic. "The most effective way to integrate storytelling is to find an anecdote that will most clearly represent what you want to say and structure it around it. Most importantly, this story is authentic, even if it is scripted.
4) Embody your message
Once the subject is defined, it is necessary to project on stage (mentally), to be ready to look the public in the eye. It is the audience that, by this look, will activate your speech. One should not just sweep the room of the eyes, but rather impose its presence by its look. As in the theatre, the whole attitude must be worked to put the audience at ease and catch his attention. You have to build a character on stage by modulating his posture and his voice, For it to be natural, it should not be improvisation, but rather re-improvisation.
5) Repeat, repeat and repeat
Even if you start preparing your presentation three days before D-Day, it will be important to take the time to repeat. First of all, telling one's "story" makes one's story coherent. To put in writing his text then allows to identify the duration of his speech. More you practice, the better it suits the words chosen and it will seem paradoxically improvised. Finally, it is better not to learn his text by heart, nor to read it, but to find an in-between.
Hera are some suggestions.Get your presentation materials ready. Introduce your subject from a historical perspective, briefly explain the present context, your objectives and methodology, and present your your results/their implications and conclude highlighting your findings and their significance, allotting your appropriately.