If you have problems with saying your name, either start with "My name is ___" or "The order would be under ____". Something to space it out helps me a lot. As well as exhale while your saying your name, so it's like your just mouthing the word and you happen to be speaking. A lot of people have problems speaking, and it's important to know that you're not alone. And no one has a problem if you have problems speaking. Laughing it off helps for me as well.