For a presentation I would aim for 1 minute per slide, so maybe 9 slides and 1 slide at end for any questions. Don't over fill your slides with too many words, keep them brief and expand on every point. They are really just a prompt for you. Depends really what the presentation is on whether you will be adding graphs, pictures etc to slides also or just words.
Depends on a few factors - slides/pictures/flipchart to support, how fast you talk and if you speed up when nervous (if so, do try an remember to pause!), questions on the way through or at the end, likely audience (i.e. an audience of 2 or 3 are unlikely to come up with much, an audience of 20 mouthy bods and a contentious subject could have hundreds!
I always tended to work out my framework (i.e. the keey points in the structure of tell them what I am going to tell them, tell them it, tell them what I told them) and ad lib to the mirror with a stop watch on and take it from there.
Worst presentations I ever did were the ones I scripted out a couple of sides of A4 and hence if I got lost in my memory of the scripts I was stuffed. Know your subject and structure and make it up worked for me, but then again every one is different so I am sure there will be other good advice along shortly...
PP is pretty straightforward so don't worry about that. Keep the slides simple, you're don't want to distract them with overpowering backgrounds, flashing text etc. first slide would normally be an introduction so set out what your going to be talking about, possibly introducing yourself (depends who presenting to) Last slide possibly a summary of all your points raised. So that gives you maybe 7 slides to talk about changes etc.
On the PPT stick to really short bullet points. Otherwise the audience spend their time reading them and not listening to you.
It's also likely people will have questions. If you let them know at the beginning of the presentation when they should ask them ie during as they think of them or at the end then you will manage these too.
The worst presentations are the ones where the presenter reads out the words on the slides to the audience. So, I would make it quite visual. For example, if you are going to do some marketing at ante natal classes, a pic of pregnant mums sitting in a circle is better than a sentence. You use the pics as a memory aid and elaborate on each point on the day. It is easy to get images to appear one by one on the slide by clicking, so you can introduce your points one by one and keep their attention.
I do a lot of presentations both with and without PP, it really pays to rehearse and time yourself. The best ones to watch are where the presenter really knows their stuff and animatedly talks with passion about the subject, but are unscripted.
If you save it to a memory stick, phone the place you are doing the presentation ahead of time and ensure there will be a laptop available for you to use.
That means its basically you stood up having an informative chat about a subject you know really well (I assume you want the MLU to be used more?) - I would imagine it almost sells itself in this day and age, most of the people I spoke to ante natal were falling over themselves to avoid hospital intervention and aiming for pools, birthing balls and no forceps unless it was a complete last resort.
prep by setting down the arguments for and against, reasons people don't want to use you (no doctors if it goes tits up? no epidural?) and prepare responses to these points (hosp only ten mins away by fast ambulance, docs take that long to turn up onsite in hosp anyway? Epidural slows it all down, increases chance of tearing/intervention or whatever). Don't worry about memorising it all as such just try and think about how you would give a balanced view and demonstrate you recognise the barriers and have thought on how to overcome them.
No need to remember to click between slides, worry about whether you have overdone / underdone the snazziness on PP etc.