I had a smaller carton, so I pretty much had to figure it out on my own, since your measurements wouldn't work. We battled, but I won! Well sorta...I did get it turned into a coin purse, but it has quite a few flaws. It is cute anyways.
I, also, used the scraps to make a business card holder that I've sewn together with my sewing machine! I haven't put the velcro on it, yet.