@Xystus
Really? I think it's pretty basic, there is no even need for redraw, just some eraser that can be done in 1 minute in paint.
And don't take me wrong, it looks good. I just don't get it what's so great in something so common, that you even specifically mention it.
That ["pat" on page 3], and ["rub rub" on page 6] are both infinitely more difficult and amazing than qr-code collage.