Define the space limits of your abstract. The most common length is between 100 and 300 words. If your abstract will be published somewhere such as a website that will be promoting the speech, then you should find out if the website publisher has length requirements.
Write an outline of the main points of the speech.
Write a summary of the speech using the main points from the outline you created as a guide. Make sure all relevant learning points are included in the summary.
Edit your summary until it meets the space requirements of your abstract. If you must remove some of the main points you identified in your outline, then you should remove the least important points first.
Title your abstract the same as your speech.
Submit your abstract to your publisher or teacher for review.