Dear sunny
Cement plastering done on ceiling or walls with 1:3 or 1:4 ratio is good and strong enough, no other market material is required. for good plastering you visit gharexpert.com website of construction where in finishing you will find lot of articles about plastering link given below
http://www.gharexpert.com/articles/Cement-Plastering-1037/Achieve-a-good-quality-in-‘Plastering’_0.aspx
http://www.gharexpert.com/articles/Cement-Plastering-1032/Minimize-defects-in-‘Plaster-Work’_0.aspx
http://www.gharexpert.com/articles/Cement-Plastering-1402/Plastering-0.aspx
Links are perfect, I have cross check the links they are properly working, please try again. If you have any problem then write again.