Kathy,
You can use color very judiciously.
Or you can simply highlight the paragraph or sentence you want to bring special attention to
Then either return to normal type.
Or, you can make some of the type a lot smaller as an introduction to your main point.
Then use larger type for emphasis
Or maybe use a bold larger type for further emphasis
Then end it all with another color
maybe even add some emphasis to the color
Now we've really given you some toys - err tools, to play with ;-)
Sun :-)