Write down your impressions as you listen to or read the speeches. Select an excerpt from a speech you'd like to deliver to the class. Download the speech and practice the part you want to use. Try to get the message across as well as the original speaker had done. Don't try to memorize the whole speech.
Most public speakers refer to a copy of a speech as they speak.
Do memorize the opening line and the last line. 4. Make posters or flyers, if you want, that tell when and where your speech will be given. Try to make them look authentic to the time period. Distribute them to classmates so they'll know when and where you're speaking, and on what subject, if applicable.