summarize

  1. Could someone summarize this Yoo Nam-Kyu lesson about Korean Footwork/Topspin?

    https://www.youtube.com/watch?v=2kqjY8Wx6tg This seems like a very interesting video about common mistakes in footwork. I would appreciate if someone like Der-Echte could summarize what it says, as i think i make some of the mistakes Nam-Kyu touches upon. Thanks in advance
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