I thought it was a great routine! I agree with the other posters who said not to turn your back to your audience. It seemed as if your entire focus was on the left side of the table (your left). You turned your mat to face your left side, when it was your right side that was blocking view of the spectators. Remember, if you turn your back to your spectators, they will turn their backs on you. That's just something to keep in mind. Try addressing all spectators rather than just one in particular when performing for a group.
Also, watch your "Ums and Uhhs". I think the "Ums and Uhhs" happened because you focused too much on your patter. Try making jokes on the spot rather than following a strict set of rules. Just throw more of yourself into your performance. I can't tell you what "yourself" is though, only you know
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Overall it was a good performance and I enjoyed it. Keep up the good work!
Mitch