First of all, I will give you a minute to introduce yourself, try to explain your professional knowledge clearly, speak fluently, and don't give people a feeling of nervousness and unconfidence. You still need to know your professional skills so as not to be stupid when answering questions. In short, just dress appropriately and pay attention to your words. Remember not to be nervous! Now that you have passed the computer exam, you can prove that you are capable. Give yourself more confidence and consider "auditioning" in front of the mirror.