There are many different types of visuals to choose from, such as photos, illustrations, infographics, charts, and graphs. The best type of visual for your content will depend on your audience and the message you're trying to convey 

Tailor your visuals to the age, background knowledge, and interests of your audience. For example, if you're creating content for children, use bright colors, simple illustrations, and minimal text. For a more professional audience, use charts, graphs, and infographics to present complex information. 

Don't overload your visuals with too much information. Use clear and concise labels, and avoid using too many colors or fonts.