In reply to Bojo:
superb - glad I could be of help
my next tip, rehearse until you are blue in the face, and then do it some more.
Use the timing function so you know how long you are actually presenting for, record yourself to see where you waffle, pick your nose, stare in to space and so on. Present to the dog, your partner, have some notes to refer to, do not speak the words on the slide but speak around/to them, look at and speak to your audience. And unless you’re giving a presentation on the future of the Conservative Party to CCHQ - enjoy yourself!