To edit your card details:

1. Tap the card you want to edit to view in full screen mode

2. Tap the 'pencil' icon at the top right to change the details

3. Once you finish updating the details, tap the 'check' button at the top right to save changes.

Note: Please note that the 'Edit' button may not appear on cards that have already been verified by the person who owns the card (unless you're that person, of course).