i need to do a poster to advertise a 'new' mobile phone it needs to stand out to the people who see it
You may get some ideas from the articles in here:
http://www.google.com/#hl=en&q=how+to+advertise+new+mobile+phone&aq=f&aqi=&aql=&oq=&gs_rfai=&fp=5f037f37a35935c1
Also here:
http://www.google.com/images?hl=en&q=how%20to%20advertise%20new%20mobile%20phone&um=1&ie=UTF-8&source=og&sa=N&tab=wi