Hi, rrajago, You are asking too many questions, which I am not capable of answering. Well, as far as I know ( I know very little only) Thrishathi archana can be done only by those who have had srividya upadesham. Ashtothram, s namam can be done by everybody. Collect the kumkumam & immerse it is river or beach periodically. You can keep the two any way you like. Love, Chithra.