Answer
When using presentation software, when you compose a slide, use text, pictures, colors, sounds, and effects that best express your idea.
Step-by-step explanation
When giving a presentation using slides, understand the slide adequately to enable you explain the same to the audience. Use few words in each slide to make a presentation with many slides. Images, videos and sounds used should connect to your idea and add the source by attaching an URL. Your message should be concise and to the point with a Q/A parts. Use a font that is attractive.