Tai chi is a lifelong journey to one's physical well being. Practice makes perfect but disclipline, dedication and self interest are far more important. Initial clumsiness will be replaced by smooth gesture and stroke as one delves deeper.
Unconciously, your pace will need to slow down tremendously as Tai chi works best if each pace, stroke or gesture lasts more than 5 seconds. This is the secrets of the masters.
It is known to 'cure' major ailments and even cancer but most of all, the entire body gets a good work out - part 1
I have answered this before, but if you missed it, here it is again. I was diagnosed with Lung problems some 8 years ago. Whilst on a cruise, one of the Russian Officers started to teach Tai Chi and said it could help me, but it would take time. Whilst looking round a record store I found a DVD teaching Tai Chi Chi Kung in a very simple form, I bought it and found it similar to what I had been doing. Six years later I still do it 3 or 4 times a week, taking between 30 and 40 minutes. My breathing is now a lot better. If anyone would like to get the DVD, let me know and I will forward the details. It is very simple only needing about 4 sq meters of space.