Custom Jurassic Park packaging design

Background: Several toys designed by Kenner for the first Jurassic Park toyline made it to finished product but were never packaged and put on shelves. Though these dinosaurs were later repainted and sold in newer lines, the packaging never was. For my own private collection, I would like to fix that. The work is relatively easy. The entire second series small dinosaur toyline has almost identical packaging, with exception to the name and description of the character and its instruction photos on the backside. I have already started work on the three small dinosaurs, so much of the work will be to touch up what I've already done and make it appear more genuine. These are simply front and back cardback. The fourth dinosaur was large and was supposed to come in a box. I have no exact template to work with. I do intend to find dimensions for the box and also send scans of similar boxes from other large dinosaurs in the line so that you have a base to work with. If you are interested, please contact me.