Do it
Everything about the presentation is ready and so are you. The only things left if to face the audience in a confident and positive manner and leave a mark on them when you are in the process of finally presenting the matter to the audience you need to be extremely careful about the introduction and the conclusion of the presentation. When you commence keep one things in mind capture the attention of the audience right at the start by making the opening spell binding. If you do not capture the attention of your audience right at the start you have lost them forever. Any amount of persuasion or the use of stylistic devices at a later stage will not help you to regain their confidence in your abilities for presentation.