Big day in my career tomorrow but I'm afraid I can't make it

Big day in my career tomorrow but I'm afraid I can't make it I just moved to dubai, new job with really amazing salary for a junior like me, we are a mid size company and we should work with large multinational company and tomorrow I have to visit this company to meet the team leader and the rest of the team to discuss business and show them that we can handle the work given to us, I'm really stressed because (you know) I have to meet new people, introduce myself (this is the worst part) and I'm afraid that I will not do well tomorrow and might affect my job and my company will not be happy as I'm still in the shadowing process and they can just fire me.