Angela Salberg

Using images that are effective but not distracting to the viewer.
Use an appropriate amount of images. Having too many images can be distracting

PowerPoint offers you a number of different ways to add clip art and pictures to a presentation. Perhaps the easiest way to do so is to select a Slide Layout that contains a placeholder for content such as clip art and pictures. Select Format > Slide Layout from the menu to bring up the Slide Layout task pane.

Some helpful hints for putting clipart into your slideshows.

Don't let "pretty" be your only criterion
Before you add a clip or image to your document, be sure that it makes sense in the context you're using it in, and that you're not including it just because it's pretty
You can help your readers by providing a few clues, such as image captions or labels. For example, if you can't use text wrapping to put the image into context, you can use a caption or a descriptive title instead, to connect the image to your text.
Using Adequately sized photos

Readers should be able to view and read your graphics easily. Whether too small or too large, an incorrectly sized image can make your document look messy and may actually detract from its overall effectiveness. If an image is too small, readers may have to struggle to make it out. If the image is too large, it can distract readers from the text as well as increase the file size of the document. Remember, you want to include images that emphasize what you're saying, not take away from it.

Give credit where credit is due
If you use copyright-protected images within your document, you must also cite the source for each image. However, there are several sites, such as the Clip Art and Media site on Office Online, that allow free use of their clips and images as long as you agree to their terms of use.