Wedding speeches are usually one of the main highlights of the wedding, especially when it comes time for the best man and maid of honor to give speeches. Usually they are a bit tipsy from taking a bit much of the wine while eating their meal. Trying to compose themselves, and getting up to give the speech takes a bit longer than it should have. This is one of the reasons I fear giving wedding speeches, because I might be so nervous to give the speech I take too much wine to try and composition, which never works because in the long run I end up getting drunk and forgetting my lines.
That is why it is best you do all the practicing of your wedding speeches before the wedding is at hand. You can get help writing your speech as well just in case you are having problems with that. There are several books that show you how to write and give you points on how to deliver the speech as well.
Practicing the speech before hand is a good idea. You can try practicing the speech in front of your family and friends and get their take on the speech as well as the delivery of the speech. Try adding some humor to the speech it always helps. Ensure that you have it all in your head or carry the speech on a card just in case you forget.
To make it easier carry points of the speech and try and make the guest laugh. Take note, never take heavy amounts of alcoholic drinks before to calm you're nervous. This always ends up badly. You can get free speech from the internet just in case you feel yours is not up to par or use them to make your own.