Have a support, AND some notes that complement the support
You may read, but don't look like you are only reading. Be careful to
some suspicious change of talking speed between when you are reading, and
when you are not
Look at you audience time to time (indeed as much as possible, and not
always the same person, especially not only at me)
If you look at the screen, it is only to show something on it, because
then you lose the eye contact, and the sound of your voice fade away
The Voice should be strong enough !!! should come from your belly, not
from your Throat