Presentation skills we were taught urged us to think of the following:
Prepare the end of the talk first,you are taking the audience on a journey, what is the destination? or look at this way:
What is the purpose of my talk i.e what conclusion do I want my audience to come to as a result of my talk?
For instance:I want to convince them that X is better than Y and why, so "There is evidence for each approach,on each side of this argument,I hope I have shown that X is supported by more research and has better outcomes",(or whatever)
OK, so that is your conclusion,now how do you introduce the topic:
"In this talk I would like to consider the evidence for 2 approaches,X and Y and hope to demonstrate why I would argue in favour of X."
Others in our field have decide between the 2 approaches by looking at :,outcomes,feasibility,cost etc etc.These have been discussed in this article:where overall X had that effect and Y this..(I am making up all this stuff! It's just to give a for instance.)
*Slide to give information on the article
The most recent study has shown,or most recent experience is.....
Again X looks as if it had .. to offer as compared to the benefit of Y
*Slide to give information on the evidence
The study or experience of this system,which is nearest to our experience in this country.....Shows etc etc in X cf Y
*Slide with the study reference
Choose the information that you took into account when deciding your what your conclusion is.
Therefore : my conclusion.
"Having weighed up the evidence on each side and I hope I have shown that X is supported by more research and has better outcomes."
Your slides are :
Topic of talk .Don't read it,it just stays up as you introduce it,so as to focus the minds that you are not discussing travel in the Andes or whatever.Look at your audience,not the slide.
Next slides could contain the details of articles you reference in each point,such as the name of the person advocating an approach and why and where said.
(You can include a slide straight after the intro which lists your 3 lots of evidence,depending on how much time you find it all takes)
Write out your draft talk, practice it out loud,time it.Really know what you have to say,however,I personally would not advocate learning it off by heart,you want to sound relaxed and natural,and not stress if you loose your place.Don't forget,your audience do not know your script,so won't know if you missed a little bit you meant to touch on.
Nerves can make us speak fast,it can be hard to tell oneself to slow down,but easier to remember to stop at a pause,giving the audience time to hear what you said. (A boss once said to me it's like feeding porridge to a baby,give them time to swallow or you and the baby land up in a mess!)
And the person in the audience who frowns while you are speaking can often be the one who comes up to you afterwards to say you were really interesting! They were just thinking hard.
Good luck!