Unaccustomed to public speaking as I am...

I'm going to a wedding (for the first time ever!) on Saturday, and at the request of the bride, am reading Larkin's An Arundel Tomb during the service. I've been fine with this for months, but it hit me last weekend that I couldn't even read it stood up in front of one friend without my voice trembling and hands shaking and generally turning into a massive pussy.

Help me, or I'm going to ruin the happiest day of her life.