Describe your solution. Tell how you did it. Suggest other applications. Summarise what it all means. Tell your story in a straight line, and make one point lead to the next.
Comprehension is better when the subject is organised simply.
Since good technical talks are an effective mix of verbal and visual elements, spend about as much time on your slides as you did on your paper. Plan a series of slides that progressively disclose your subject by building from cause to effect, simple to more complex, and questions to answers. Do not bury your points in too much detail and make sure that the text on your slides is concise. Each slide should express only a few closely related ideas, tersely stated. Use your slides to assist your words and to keep you on track.