First, practice your speech on your own. Consider practicing your speech for friends or family members. After that you must present the speech to your teachers or class. Keep the following instructions in mind when preparing for the speech: Be aware of the time limit of the presentation.
Know and understand the material that is being delivered.
Plan the delivery of every point in the speech.
Create notecards to help you remember the important information.
Also, consider the following practices when delivering a speech:

Speak naturally, clearly, and loudly enough that everyone can hear you.
Make eye contact with various people in the audience.
Use hand gestures when you need to emphasize a point.
Vary your tone and volume for emphasis.
Stand straight but comfortably.
Dress in a neat and presentable manner.
Before delivering your speech to your chosen audience, practice delivering the speech in front of a mirror or a smaller audience such as close friends or family members. Then, you will deliver the speech to your chosen audience. You can also use an audio recording tool, to record your speech and submit an audio version of your speech to your teacher, if your teacher agrees. However, this is not mandatory.