Apply one coat paintco latex primer sealer or any other suitable primer and allow it for complete dry. – Apply one coat of stucco putty or any other paintco filler to fill the imperfections and obtain smooth surface. – Apply two coats of paintco undercoat or paintco interior emulsion with roller. – Apply marble finish to a small area using spatula then apply the same Across the entire surface using a scrapper, let it dry repeat the same process of application 2 to 3 times to obtain a very smooth marble like finish Can create different patterns by controlling the direction of scrapper such as wavy lines, crosslines or diagonal patterns. When dry sand the surface with #100 abrasive papers. Finally create the marble effect by polishing wax or steel trowel.