One of the most powerful things to have in your speech is a story about you can the groom. A knock out speech would include a personal story about you and the groom and the experience youg uys had together. To have a good story think of some type of encounter you had with the bride and groom that let you know they were right for each other.
You should check out a good guide for wedding speeches for best man. Include some funny jokes that again are appropriate for the moment. People at weddings appreciate funny moments so be sure to include some jokes.
Make sure you do not go off on a tangent and say something that means something to the bride and groom. I would go with a solid ending that would include something like wishing the bride and groom the best of wishes. Wedding speeches are suppose to be memorable for powerful material that enhances the marriage. Getting in a solid wedding speech can be really difficult if you re nervous which is why you need to be yourself first and foremost.
