Simple and quick, you need the following:
1. Good material, on the one hand, should have good content, on the other hand, should have some emotional poems that can make your voice cadence.
2. A good soundtrack, don't ignore the soundtrack, a suitable soundtrack can add a lot of color to your recitation.
Be familiar with the manuscript of this poem, don't read it from the book. It's best to memorize it, or at least be very familiar with it.
There are many points to pay attention to, depending on a specific recitation. In addition, listen to others' recitations, such as Believe in the Future, To the Oak Tree and so on.
Finally, believe in yourself and have the temperament of reciting, and you will succeed.