I need some tips on how to better read aloud. Any ideas?

So night at 5 I will be reading about a chapter from It (by Stephen King) for Pat French. Now, I’m not the best at reading aloud, right, so does anyone have some tips or links to websites that could help me improve? I know I can’t improve in 4 hours, but it will give me a start (and I am also looking for sites).

Here is a little background on Pat to explain why this is so important for me. Pat French is now an acting teacher (and probably the best, at least in Washington). She used to be on the radio and tv (she was the Red Tag Lady (the older generation on here may know of her)) and she had met will many people, such as Jimmy Stewart and he gave her advice too. Pat is married to Jim French. He used to produce old time radio shows (Jim French Productions) but I believe he is now retired.

Now, I want to become a famous actress and get i the business, right, and these are some of the people who will really be able to help me. This is why it is so important that I am able to read aloud really well, because obviously for radio shows you have to be able to read from a script fluently.

So I am really asking for you’re help and I would very, VERY much appriciate it if you gave me some tips and sites to help.

Thank you.