The skill tests are a part of the Guided lessons you play and can also be found via Learn → Missions tab.
Once you've completed the tasks, please tap on Make my certificate.
Enter the name you would like to be printed on the certificate, as well as the email address you want it to be sent to. After you tap on the Make my certificate, it will be emailed to you.
I can't find my certificate
If you have just completed a level but can't find the certificate in your inbox, please check your spam/junk folder, as the email could have landed there. If you're trying to find a certificate for one of your previous levels, just search for "Yousician Certificate" in your inbox. The certificate is included as an attachment to the email and can be accessed at any time.
If you have lost the email, you can re-play the Skill test and re-send it to yourself. Alternatively, you can contact Support, who can email you a copy. Please note that Support can not change the name or the path names on the certificates.