You're going to need an example card to work from. You will need to order the paper and have an appropriate printer. You ware going to want to make about 10 and pick the best one. You, then, use this paper work register with the government so that you can be entered digitally into the system. This is getting harder to do, everyday. The US experienced a massive wave of faked cards that no one can verify, either way, but hospitals get paid to make sure all their patients are getting vaxxed. You can't have surgery in some hospitals without a vaxx card.