Redesign the Yousician Certificates
I was thinking that, since we all get official Yousician certificates everytime we reach a new level, the certicifates need a new design, one that's more consistent with the app itself. I decided to do a mockup (with the ukulele, since I'm playing that instrument), explaining what I meant with that idea, and some elements that I think should stay in future certificates.
You can view the mockup here: bit.ly/2MNBQYL
Btw, can someone tell me if these certificates have any value in a CV?

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Unanonymous commented
Ofc they don't have any value in your CV. It's a game that says nothing about your style, your skills of co-operation or ability to coordinate in a live situation with other players.
In music your CV is the people you know and have played with.