Prayer for testimony speech before baptism

Hi on Sunday I’m getting baptised in front of my whole congregation, friends and family (all my family are non believers and my friend who is coming is also a non believer). I have never been one to publicly speak at all. In school I chose to get after school detention instead of speaking in front of my class. This is really scary for me. my pastor is helping me to the best of his abilities but I’d like some people to pray that I toughen up a bit and that the Holy Spirit flows through me and fills me with the strength to do this. Many thanks.