I had to book the meeting about three weeks ago, to ensure I got a meeting room at work and to make sure everyone I wanted there was going to be available. When I did this, I made life a lot easier for my present self, by completing a meeting agenda. The agenda consists of: a company logo, meeting, objective, agenda items and background information. I even have a copy of an old presentation which has the backbone of the information I would like to present today, but it may need a bit of tweaking to bring it up to date.
The top presentation tip that I have learnt over the years is to sit down. This is something that works perfectly for me, although it may be inappropriate depending on the audience size. I find that I am a lot less nervous, no-one can see my knees knocking and I find that it helps turns the questions at the end from a police interrogation to a much more friendly academic discussion.
Another thing which I find really helps me is to print off the slides, both for myself and for the others in the meeting. That means instead of staring at me, the audience are more likely to take casual glances down. But the printed slides should be stapled so stop people rummaging through them and distracting you. They should also have page numbers to help refer to random slides during the discussion afterwards.
My last top tip is to "fake it 'till you make it". Pretend to be enjoying it. Stretch a painfully wide smile over your face. In the end, you may end up actually enjoying having your 15 minutes to show off what you know.
And, the Vault Boy picture? I'm sure no-one will notice.