Add Graphics Images capture interest, but they are a mixed bag as they take a long time to load. To create pages that look good, but don't take forever to load, follow the 20 Seconds Rule. Go to the Document Statistics window in your browser and see how long it will take visitors to download your page. If it takes over 20 seconds, users will become impatient.
Smaller images take less time to load.
Or put your image on its own page. Be careful, some animated GIFs can be annoying with their constant movement. Whatever you do, make sure your graphics are relevant and help convey your message. You may get your images from a number of sources. You may scan them, import them with a digital camera, or copy them from another Web site as long as you've got copyright permission.