Plan your descriptive speech by stating who or what you are going to describe. Think about what qualities will be the focus of your speech, and why are you writing this description. Make a simple outline of these points to organize your thoughts. Give your audience a vivid experience by focusing on the five senses: touch, taste, sight, sound and smell.
Write the first draft of your speech using descriptive words. Do not say "The boy fell out the window." Describe the fall in rich detail. "As the curly haired boy watched the kitten crouched over the dead cockroach, his head inched across the window sill until the weight of his body sent him tumbling into the tomato patch below." Think about the feel of your story and add the sights, sounds and smells of the incident.
Revise your speech with careful attention to detail. Remember that in descriptive speech writing you must add rich detail. Check your story to make sure it moves in an orderly manner. Do not leave out any minor details. Check for unnecessary details. Use descriptive words to get your story across but leave out any details that interfere with the progression of your story.