Select the Blue Plus sign:
You will then be brought to the template screen.:
Scroll through the Template Carousel and select a template
Here you have the option to change your button colors as well
Once completed, select the "Green Check mark"
Shuffle will then ask you if you would like to transfer your profile information
Name your card something that only you will see and proceed to fill out the rest of your card by scrolling down:
You have added a new card to your carousel after selecting the "Checkmark".
Once completed, your card will preview with this message:
Then select "Done" and your card has been added to your Carousel!