Here are some general goals of a visual for presentation. The text must be readable and the audience must be able to comprehend the information easily. The visual should be kept as simple as possible. Complex visuals decrease readability and increases confusion. Think of your visuals as your billboards of information. Billboards generally have 2-7 words and one simple graphic. Keep your slides like that and your audience won’t have troubles decifering the information. Also, keep your visuals consistent. Use the same colors for backgrounds, titles, bars on graph for same item, same location of title, etc. This helps your audience to learn how to read your slides and read them faster.