Make line lengths in a text frame approximately equal to one another. Develop a logo or an institutional identification segment for use in your presentations and include this in your opening frame. Use builds, or reveals, or progressive disclosure slides to give visual variety and to help the audience absorb the information one step at a time. Make the last item in the list brighter or of a different color than the others. Grab viewer's attention with drop shadows but use them sparingly.
Drop shadows can be colors other than black or gray.
The deeper the shadow, the closer to the audience the object appears to be. The general rule is to make the shadow a darker shade than the original. Use color sparingly. Limit colors to two or three on a contrasting background. Use distinctive color contrasts between the text and background.