This sadhana is based on the instructions on the practice of Green Tara given by Mahasiddha Subhuti Shrisinda. The practice has two parts: the preparations and the actual practice.
The preparations are of two types: external and internal. The external preparations consist of cleaning the meditation room, setting up a shrine with images of Buddha Shakyamuni and Green Tara, and setting out a beautiful arrangement of torma offerings and other offerings. The tormas can be honey, cakes, or any other clean, non-perishable food that is not mixed with alcohol, meat, garlic, or onion. We can use water to represent nectar for drinking, water for bathing the feet, and perfume. For the remaining offerings - flowers, incense, light, and pure food - if possible we should set out the actual substances.
As for internal preparations, we should try to improve our compassion, bodhichitta, and correct view of emptiness through the practice of the stages of the path, and to receive a Tantric empowerment of Green Tara. It is possible to participate in group pujas if we have not yet received an empowerment, but to gain deep experience of this practice we need to receive an empowerment. The main internal preparation is to generate and strengthen our faith in Arya Tara, regarding her as the synthesis of all Gurus, Yidams, and Buddhas.
The actual practice of the instructions should be performed in conjunction with this sadhana. Sometimes we can emphasize placement meditation and sometimes we can emphasize reciting the mantra and prayers with faith and devotion. When we are reciting, we should avoid any distracting thoughts and concentrate on the meaning of the words.
