One thing I might mention is not sticking 100% rigidly to the script. If, on the fly, you realise you can say something in a better way than in the script then do so. It sounds more natural and much less forced

Or better yet, once you feel confident, just have a list of dot-points you want to cover (instead of a script) then free-talk about them. But this is a great foundation to work from ^_^