Well, after you've been practising getting your feet sorted out, then you can start on your posture. Many people when they first start tai chi suddenly become aware of what is wrong with their posture... From being unaware of the habits of years or decades, now they are confronted with the result of those habits.

Tai chi posture improvements involve feeling these:
  • the top of the head pushing up, to stretch the neck,
  • the chin tucked
  • the tongue behind the top front teeth, on the roof of the mouth
  • the shoulders relaxed and the chest hollow
  • the butt tucked
  • the knees slightly bent
If you practise feeling these that's good; better still if you have a mirror that you can check yourself in; best of all if you have an instructor who can check you out and show you how to correct each part of your posture.

Once you've tried all these standing still, the challenge then becomes to apply these principles while you are moving as well. It takes a lot of practise and a lot of feedback to make these posture improvements become habitual. Without these types of improvements, you will be wondering why your movements seem fine to you, but feel pretty strange, or look strange in the mirror. Posture really is one of the key aspects of tai chi and needs to be practised constantly, to achieve and maintain your improvements.