I do not know. I do not do one job too much. I undertake to do several jobs at once. I do my homework, then I can devote 2 or 3 hours to drawing, then I embroider, then I cook, I go to the institute the next day, then I do my homework again, then I take out my unadorned drawing, I try to draw again 2 or 3 hours, then I embroider , or playing a game, or something else. and so every day :) so I can not say exactly how long I draw my pictures. can be 10 hours in total.