• Do your homework

  On your topic, audience and venue (research and rehearse)

• Use pauses

  They help you and your audience

• Be properly introduced

  Thank your hosts for inviting you and your audience for attending

• Use humour

  It establishes rapport with your audience

• Arrive in good time and relax

  Start as you mean to carry on

• Be confident

  You've been invited, your audience is on 'your side'

• Take a deep breath before you start

  Helps you and your audience get settled

• Viable visual aids

  Make them easy to read, keep to a maximum of seven headings per chart

• 'Signpost' your talk

  Purpose, structure and content - and keep your allotted time

• Be prepared

  For questions and the unexpected!

• Maintain eye contact

  Helps you check audience reaction and 'keep the bond'

• Finish with a punch

  Leave them in no doubt as to your parting message/s

And to round it off..
Am average speaker delivers about one and a half words per second, allowing for pauses and emphasis. A talk of six minutes means no more than 550 words. So, if your first draft is 1000 words, start cutting!