also a late arrival to this project but you did an amazing job! I've been searching for templates and hi-res graphics to re-create some of my old games I used to own to make a showcase of them. just for me since I think that in those days there was a real work and love put into making those boxes.
I hope to be able to make some on my own but I would probably used the cardstock method and create the box and glue a hi-res print instead of sending it to be printed outsourced (not many options who can actually do it here and my sister and I are pretty good crafts and arts people)
