Avoid these typical problems:

The top annoyances (respondents cited that the item was one of their top three annoyances) in a presenation were as follows:
The speaker read the slides to us 62.0%
Text was so small I couldn't read it 46.9%
Slides hard to see because of color choice 42.6%
Full sentences instead of bullet points 39.1%
Moving/flying text or graphics 24.8%
Overly complex diagrams or charts 22.2%