I think you should get an email with detailed instructions soon.
Basically, there is a dedicated site where your exam history is stored and from where you can download all certifications, logos, etc.
Congratulations on passing your exam! You can access all your certification information by visiting CertTracker Login | QlikView
I also recommend reading the Certification FAQ file:///C:/Users/sms/Downloads/Qlik-Certification-Program-FAQ-EN.pdf
If you have questions you can email firstname.lastname@example.org