You can get a work certificate of every individual work task or you can create WorkPilots-CV and gather all the tasks there.
Check this link to see how to create a CV: https://workpilots.zendesk.com/hc/en-us/articles/360000390272-CV.
How to get a certificate of an individual work task:
Open the history-page of your profile ("Orders" on the left side bar of the page -> and History-tab on that page.) Select the task you would like to get the certificate from. Then, on the right edge of the page, is a button "Get certificate". (In the left side of that same row reads the status of that task.)
Clicking that opens up a pop-up window where you can choose, whether you want to show the feedback from that task on the certificate or not.
Then just click "Download certificate"!
If that version is not enough and you need some kind of other work certificate, send us an e-mail at firstname.lastname@example.org and we will help you.