I developed the presentation below to accompany a class lecture for my Spring 2010 sections of WRTG 3020, but the presentation is designed to stand alone and should therefore be useful to you even without my delivery.
The class was working on developing their own stand alone presentations, so the tips are geared in that direction rather than towards presentations meant to accompany an oral delivery.
Also see the additional resources on presentation design at the bottom of this handout: Strategies for Composing Effective Stand-Alone Presentations
Rhetoric Presentations Published v2