Both upper arms show balance of creation and destruction. Life ends in the fires of destruction. And then life comes over and over again. This gesture promises salvation or release from the world of forms and rebirth. This hand points to the way out.
Dwarf can also symbolize forgetfulness, heedlessness, blindness.
Two feet together symbolize interplay of insight and forgetfulness. Shiva's matted hair flowing out as he dances reminds viewer he was an ascetic. Image of Ganges River in Shiva's hair . Ganga had returned to the Himalaya mountains but the people on the plain needed water. A sage performed extraordinary feats of devotion and Ganga agreed to come back to the parched earth.