I'm wanting to promote my products in my city with some community outreach. I specialize in modernized transportation devices (Hoverboards, Intelligent Unicycles, etc) What I would like to do, is have a template that anybody can download, with the dimensions for the corresponding box (one for each model Hoverboard that I have) and the winner of the design contest will receive a free hoverboard of their choice, as well as the design to be placed on all boxes used for the model they entered for. Does anybody know of a good platform/ service that can provide this? Right now, I'm looking at trying to make a Vector File template so that anybody can download the blank design of the box, design accordingly, and then re-upload the finished/edited box design in full quality so that I can have the finished design sent to my manufacturer for production. Is this realistic?