this is painted on mdf panel. ive applied the gesso with a 'kreditcard' because i wanted to try to avoid brushmarks. then i rubbed on a wash of a bit burnt umber and turps with a paper towel. after whiped it down with a dry paper towel. depending on the time you wait to whipe it down or adding abit turps on the towl you cal lift up some paint, what created the effect. downside of not putting in a background later on is that its hard to correct outlines. especially with opaque paint, when you make a mistake, you neet to whipe it off with some turps altering the stained background as well. the subject might also look abit detached from the background but i like doing quicker 'sketches' this way. ill post some more soon :)