There are two ways to create a Virtual Card:
The easiest is with the "Quick vCard" option. When selecting quickVCard from the home screen for the first time, you will be asked to enter the default information for a "Quick vCard." After you've done this, just open up the application and select "Quick vCard" from the home screen.
The other way to create a Virtual Card is with the "+" option found on the upper right portion of the "Cards" section. You can specify the amount, expiration date, if purchases must be an exact dollar amount, if you want to restrict usage in specific merchant categories, and more. Once you've made all of your selections, just tap "Create Card".