The Dance of Shiva, Shiva Natarajasana or Shiva Nata is a beautiful practice, which can often feel a bit overwhelming at first.
To get the most out of giving it a go, I strongly recommend trying several classes over the course of a week. You will find that you are making daily small (and sometimes large) progressions in understanding the movements of the arms and will quickly begin to flow with more challenging and complicated variations of the movements.
As well as increased confidence and co-ordination of the arms and a testing brain work out, you will benefit from a fantastic shoulder work out too, opening your upper spine, chest and shoulders.
In my online classes I will endeavour to help you progress through a supported self practice. I may suggest to you that the best development is to leave the class at a certain point and either work on what you had done to that point as your self practice, or alternatively just sleep on it, let it sink into your subconscious and try again in another class soon.
You will hopefully discover that it is that testing point where we struggle to work things out that the real learning is happening. It would be wonderful if you can celebrate and struggle through those moments in class with us. However to get you started I have broken down the initial arm positions for the Vertical and Horizontal spirals below.