Serkan, Metin thank you for your comments. Metin the flesh mix is actually a very simple one i been using since my days with oils only know is converted in josjona's acrylics. Basic mix includes raw sienna, burnt sienna, liitle red(every basic red will do) and naples yellow hue. To this mix you can add a pinch of blue or green depending on the effect you want to achieve. For the particular bust i added just a little bit of pthalo green. Highlighting was done with naples yellow. 1st shadows are done adding burnt sienna and deeper shadows adding a mix of burnt umber and red.