Try to vary your tone so you don’t lull your audience to sleep. If you pace yourself, you won’t be rushing to finish at 2 minutes 45 seconds and garbling your sentences.
Always maintain eye contact with your audience. You don’t want to be looking at notes constantly. Eye contact is one of the best ways of engaging your audience.
Speak clearly and at a reasonable pace. It’s fine to move around and to use appropriate gestures, but too much movement can be distracting, causing people to watch rather than listen.
Finally, speak with enthusiasm and passion. As one of the judges last year commented, ‘It is, after all, your thesis. If you don’t display positivity, then no one else is going to be convinced by the talk.’