Personally, I don't picture the audience naked! I know many say it's best, but I find that weird.
Copyright free images that show or enhance what you have, are ok, just check n double check they're the right ones.
I wouldnt just read from notes or your paper, I'd do something in-between.. like prompts,
Don't leave slides on while talking about something else.
Try not to waffle ... My hardest thing!
Be consice
Practise on someone who knows nothing on the subject, and you can trust them to be honest. It doesn't matter if they know it or not, but they'll tell you if they're bored, or confused between 2nthings.
Use prompt cards from your paper (should've put this higher!).
Handouts. I was told early on, not to give out notes until the end of each session, or they'll get read while your talking... I find this of putting.
And most of all, relax. It's YOUR presentation.
I've given a few presentations over the years, taught from the front, and sang from the front (both as a group n solo), I've also been known to preach from the pulpit... My god the first time was nerve racking.
It's nervous, but use that energy .... Oh did I say, don't waffle! lol