There is a great video on the guy who helps TED presenters get their story down. I recommend searching that and giving it a watch.
People say this all the time, but tell a story. Not a chronological story, a story that starts with an insight, an idea, a vision, moves toward a struggle, a problem, an obstacle, and finishes with a resolution, a realization, a success of some kind.
Break your story into those three parts and tackle them one at a time. Tell the story visually. Make it personal, not a school project with a wrote process.