179063 powerpoint/impress presntation

I have a 25-slide impress presentation that I need "cleaned up". If you are familiar with powerpoint, impress is very similar. (It's the open office version of powerpoint) I have many bullet points and text that is in different fonts and different sizes. The font needs to be the same and the size needs to follow an 'outline' presentation style Here is an example of what I mean: Heading - large font (24pt) Sub Heading - Medium Font (18pt) text, text, text - small font (12 pt) Also, the presentation has inconsistent bullet points (some bullet points are ">" and some are " * " and some are checkmarks. I need the bullets to be consistent throughout the presentation.