GET AWAY FROM MAGIC BOOKS! This is the first thing you need to do if you want to learn how to speak and more importantly, tell a story.
There's a huge lie in magic that states in part "We are but actors playing the part of a magician . . . " It's a "lie" in that 90% of the buffoons that play with tricks rarely spend 5 minutes of their time learning about theater, acting, how to use their voice & body alongside vocabulary in order to elicit feelings, emotion, and public investment in what we are doing. It doesn't matter if we are a warm-up act for Ice Cream & Cake or working a major Casino in Vegas, we owe it to ourselves, our audience and the craft to be the best we possibly can be when it comes to the truth as to what we are; ENTERTAINERS.
Yes, there are some awesome books from within the magic fraternity but we need to consider what kind of magic we are doing in that most of this material centers on Bizarre styled performances in which the effect takes a bit of a backseat, punctuating the tale rather than being the focus. You would do much better spending time with actual Storytellers and on Storyteller or Orator forums so you can learn how to better create a magical frame of mind by way of your speaking and physical animation. I believe there's VEOH and YOUTUBE channels that address this skill that will take you a long way.
When it comes to the Magic world and resources, I always encourage people to check out Knepper's WONDER WORDS series. It can be a hint expensive but it's a powerful INVESTMENT that will pay for itself time and again. Kenton has other works that will help improve your performance like the use of "Kentonisms", Mystery by Association, and Secret of Indirection to name a few; subtleties that put most effects into a steroid mode.
Sadly, this is a massive area or study, there is no one answer or quick fix -- it is a lifetime of personal investment, trial & error, and simply paying attention to what you do when & how in a bit and how the average audience reacts to it. Over time you'll find the forms that work best FOR YOU.
Enjoy the ride!