Summarize this article:

If your child is unsure of what giving a speech should look like, give the speech yourself and let the child watch and ask questions. Let your child practice many times. If the speech is meant to be memorized, follow along on the written version and point out any parts that your child forgets. You can encourage your child to develop his or her performance by practicing in front of a mirror. This exercise allows the child to see and adjust his or her body language and facial expressions. Once your child has mastered the speech, gather friends and family members and let your child practice in front of the group. If there will be a question and answer period after the speech, have these practice audience members ask questions. Don't forget to applaud and praise your child after the practice speech. He or she will do better if you help build confidence beforehand.

Summary:
Offer a demonstration. Listen to your child practice the speech. Suggest that your child practice in front of a mirror. Gather an audience.