Hello! Sorry, but one quick, stupid question - I can't figure out how the solo mastery badge works! I see the base in the template but I don't know how to shape it at all. ;;; I've had no problem figuring out everything else, this is just the only thing I don't know how to do!

Basically: I need to be shaped like every other solo mastery badge, but instead the image is just over the base. How do I fix this?