When cutting I pick out a flower or what ever and measure it and go with about that size, give or take a 1/4 inch, that is why there really isn't a cutting size unless someone has shown me the print, that way it has a chance of just being that color, and will be multiple shades in between as it catches what is around it, but it is also a personal choice, depends on the look that you are trying to achieve as well, the larger the print, the larger the block,