What is the one thing that you want the audience to keep in mind from your discussion? Put it into one sentence and you have your message - the entire point. Say it clearly and repeat it so the audience remembers it. And ensure that every statistic, story and example relates to it.
Whose track record is at stake if something fails? As obvious as it appears, many people take for given that the logistics will look after themselves. There is nothing more humiliating than a late start. Get to the space where you are speaking early so you can familiarize yourself with the environment. Walk on the phase so it is not your very first time. Test the mike. If you appear composed rather than appearing haphazard, remember you will warm up your audience faster.
Listening also improves your speaking skills, however in a different way. You ought to likewise work on your listening abilities if you desire to speak fluently. It's difficult to have a discussion with a native speaker if you can't understand him (or her). Listen to American English on a day-to-day basis - watch movies, listen to music and podcasts.
In public speaking much of your communications occurs through motion and gesture. However, in a teleseminar your audience can't see the gestures or movements. They can on the other hand, hear their impact on you. So you require to adapt your movements and gestures. Where a gesture was usage to communicate an emotion you might still wish to make that gesture to help the emotion show in your voice. However you will most likely require to communicate that emotion using other less visual methods too.
One of my clients was scheduled to speak at a retirement dinner for a coworker. The very first speaker discussed his designated time frame by twenty minutes, which bored the audience and left my client with really little time to provide. Never go over your time limit. Nobody will grumble if you complete a few minutes early however things go downhill extremely quick once you go one minute beyond your time limit.
Listen to the speaker and communication skills after that tape your voice reading aloud the same section from the book. Compare your pronunciation to the pronunciation of the person who reads the book.
Now you know how to deal with your English abilities. Stop asking yourself "how to enhance my English speaking skills" and just start speaking as much as you can. Stop searching for a magic tablet. All the best and have enjoyable while speaking English fluently!