International spanking drawing timelapse

Hello guys. What wanted to see how this pic was made - now can do it looking this video. The whole time this pic took - 6 hours from the beginning of the stetck to the end of shading. The "clean" time of drawing (I cut amost all frames where I was thinking, drinking teal, chatting and so on) is about 4,5 hours. And I accelerated it to make only 30 minutes ow watching. Enjoy.