Card Validator: Got an "approved" message, how can I proceed?


Dear Twitter Dev-Team,

after adding the meta tags to our website and running an URL agains the validator tool, I received the message “ approved”, however nothing has happened since. I expected to receive an e-mail and instructions on how to proceed, because I couldn’t quite figure out what happens next and how I can actually use a twitter card in my tweet.
Thanks for your help guys!