As a Master of Ceremonies, and one who speaks often to entertain in front of hundreds of people it is a question that I have heard many times before. And it is difficult to answer to some who may be sensitive or are looking for a pat on the back.

I always giggle out loud and tell them I am not the one to tell you that because I have studied under many of the best, attended dozens of public speaking seminars and have practiced at Toastmaster International (I am a DTM) and other speaking groups. I quickly explain that I have been around the best, so I can't be fair when comparing to all of the others.

"Your willingness to stand in front of a group and open yourself up is a great success, your material was well-prepared, and you have a lot more to offer than you presented here.  If you would like to get better, I would love you to go with me to a Toastmasters weekly meeting and you will become your own best critic on recognizing how you can do it better next time.  Would you like to go this Wednesday evening for an hour?"

If they are really interested, they will be happy to go with you because they have a friend that is willing to help them get better, no matter where they are on their speaking career.