I hope someone can help.. I was asked to create a wall hanging, using this photo, " Mario" that was a computer type character years ago. I was asked to make it poster size, but do not know what size to cut the squares ( or rectangles) to make it all fit the dimensions of a poster. Does anyone know how to do that, or have a quilt program that can determine sized blocks for such a project? I have added the photo , so hope it shows up for anyone to give me some ideas.. I have never done something like this before..