Well. If I were you I would make it simple and clear. There will definitely be more pictures than words. If you were the audience, you probably would not like tons of words on the screen and few tiny pictures at the corner. I will first give a list of my ideas, each in no more than 10 words and the number of ideas on one page will not exceed 5. Then I will use some diagrams, pictures, or photos, even short videos to support my ideas, accompanied by my oral illustrations. You can check the Apple Keynotes. They are stylish yet simple and I think they are good.