#1 - Join a group like Toastmasters
#2 - Maintain Eye Contact
#3 - Practice, practice and practice
#4 - Believe in what you are saying
#5 - Dress Sharp - Personal Grooming is important
#6 - Do a sound check before hand and make sure you have your tools
#7 - Know your material. Don't memorize.
#8 Visualize a great end result.
#9 Know your audience and their interests
#10 Relax and don't be so tough on yourself
#11 Build suspense and tell a story
#12 Don't speak to fast or too slow. Change your tempo depending on the speech.
#13 Be funny if the speech calls for it
#14 Don't dwell on your errors
#15 Keep it short and simple
For more of the best speaking tips check out the public speakers blog.
Also, add your tip in the comment box below!