Documentation
Start to make some good search about the topic you like to make your persona ID card

Sketching
Make some doodles and dream about cards, monsters and faith

Formalization
When you get that feeling inside your heart and your brain starts to feel satisfied you can scann and start to work with vectors

Finishing & Pre-printing
Make some adjustments just to send it to the pros that will make your dream come true

Enjoy it
Pay or get dry your cards and play with them