Eschew bullet points – they are there to prompt the speaker
Use diagrams and pictures – people think in pictures
Give handouts – That’s where screeds of text belongs.
I read a paper that says one of the shuttle disasters was indirectly caused by powerpoint bullet points. A key engineering point about checking for damage was hidden in a 6 point font on a slide about 15 slides in. The engineering company was ruled by salesmen and the only way they could communicate was using it. Instead of producing a proper technical report that everyone could read and discuss at a proper meeting NASA were handed a BS powerpoint full of tiny fonts and missed this – it cost a lot of lives and money. I hate bullet points.
Also, the font size should be half the age of your target audience – another reason to use pictures.