3D box design

I'm looking for someone to design a large 3D display box for me. The box week be used as an outdoor payment terminal with the PAX IM30. The box doesn't need to be printed but I'd like it to be as realistic as possible. The size should be large, though I can provide more detailed measurements if necessary. I'm open to any suggestions you may have to make the box look the best it can. If you have any experience with 3D box designs then I would love to hear about it. Thanks for your consideration!