This may seem a little over-the-top but for someone who is shy, this kind of situation can be really overwhelming. Having sound job interview advice in advance can help you go through the process with grace and without losing your lunch. Following are some ideas that you might want to consider.
One of the most important things I learned though the job interview advice was to prepare in advance. The mystery of the unknown can be a great source of stress for an introvert. It helps to know what to expect. While thinking on your feet is important, you really want to stay calm. Preparing in advance is a great approach.