Such as your camera and video production tools.
Because if you are uncertain about the accuracy of the workmanship, you can record it and then look back to see where it is necessary to correct it.
I take pictures of the correct asana, and I try to describe it as clearly, but there are lots of photos and videos on the web too, you can find it.
If you do not have anyone who can help to make picture, you can easily do it with timer. It is worth make with the longest time interval, and even then you can spend enough time to keep, to specify and do the most of the asana.
Om Namah Sivaya ✿
