Number your slides in the required sequence by writing on the front of the mount, and write your name on the mount as well. Supervise the loading of the magazine at the conference venue. When giving your talk, do not mumble. Speak loudly, clearly and firmly. If you absolutely cannot project your voice, consider offering a poster instead of a talk.
Timing is crucial in giving a conference presentation.
You must rehearse your talk before you leave home, and make sure that it fits within the allotted time. If it is too long in rehearsal, shorten it. Do not allow it to go over into the question period, as the questions may be more important than the talk since they may generate further contact with colleagues. Critical to the timing is the number of slides that you have in your presentation. Thus, a fifteen minute talk would have about 30 slides, plus or minus 10 slides depending on their complexity.