In English if you want your speech to be the best then follow these simple steps:
1]Begin your speech with an excellent salutation.Addresing all the people present in the surroundings.
2]If the topic is an argumentative one then make it clear if your for or against the topic.
3]To make your speech more attaracive use some quotes and well known proverbs in between.
4]Always stick to the point and avoid beating around the bush.
5]See that your speech is simple and heartthrobing.
6]The conclusion part should not be too long,it should just be the summary of yiur speech.
6]If it is argumentative then make sure your conclusion should have a lesson or a moral that inspires everyone.