The audience is king!

• "Designing a presentation without an audience in mind is like writing a love letter and addressing it ‘to whom it may concern’."
  ~ Ken Haemer, AT&T

The audience is 'king'. 

A presentation can not:

• Meet its main aims
• Use appropriate visual, auditory and kinaesthetic aids
• Be pitched at the right level (knowledge base) 
• Engage, inspire or call-to-action 
• Hook the audience 

Unless you can answer the following about your audience:

• Who are they?
• Want do they want from this presentation?
• What is their knowledge base?
• How many of them are there? - this effects; visual aids, venue arrangement, any handouts or additional information
• What is their 'hook' - what is it about your delivery that will make you stand out and give them a reason to listen to you

For more info see my free 67 page book which contains exercises and templates to help you deliver a memorable presentation and increase your professional standing. 

http://bookboon.com/en/business-ebooks/career/presenting-at-conferences