After we had finished the right side long form, John Kells taught us the mirror image form or left side.
At first this felt really strange. But after a while it felt more natural than the right side form. Some say you shouldn't do a left side or mirrror image form as it will make you Ch'i run backwards and you will die. I've never heard such a complete load of rubbish! Perhaps we should only walk leading with the right foot at all times.
I guess we all instinctively favour a particular side but working on the left side helps to develop your understanding of T'ai Chi principles further and achieve a certain balance. This is my personal opinion. I'm sure practitioners with more experience than I can shed some light on working both sides of the body/brain.
The left side taught by John was also interesting in that it contained postures and variations not in the right side. Stupidly I never asked why. The idea was that we would put them into our right side form, which I did.
Anyone have any thoughts/comments on doing a mirror image form?