Kendo Podcast 119: How to Learn Waza Part II
Learning waza is another hurdle for many. What I think we should do is to 
  • know our striking distance
  • decide one technique to work on
  • work on it against lower grade holders, same level and higher grade holders.

Also make sure that you practice

  • the form of the technique
  • the techniques with your dojo mate without bogu

Listen to Part I. 

Good luck!