I have reproduced Subashini's computer kolam on floor with wet rice flour. Thanks Subashini for giving us a wonderful design, and the link for her work is here http://www.ikolam.com/node/20788?p=10760
Thanks my dear friends for your encouraging words which has boosted my confidence level to take an attempt with 189 dots
Thanks RajamAmma, I have followed your advice by placing dots with rice flour, then by wetmaavu.
Please pen down your suggestions.