Tape yourself and listen to your own voice. This will make is easier to read and much easier to listen to. People often DO NOT write the same way as they speak and this make reading more difficult. If we use wording and phrasing we normally use in our everyday language it will be easier to add the correct voice inflection and tone. Annotate your text to indicate which words to emphasize.
Numbers are the easiest target words to say slowly with emphasis on each syllable.
One of the biggest problems speakers face when reading text is that we often forget to use gestures. We are so busy is making sure we read the text we are not communicating with out entire body. One thing we can do to help is to double space the written text to leave room to add any notes or cues about gestures and other reminder type clues. We need to practice using this annotated text of our speech so we can easily and smoothly react to the cues for our gestures while at the same time am reading the text. This does take some practice.