I'm a known Finnish level creator and moderator. some of my most popular levels are: Sonar (4454123), Tiny Tunes (3382569) and, Swirl (3012870).
I mainly create design levels but i sometimes like to build effect levels.
My biggest milestones in GD are: 100 creator points, getting moderator role, and reaching 7 thousand subscribers on Youtube.
I have been playing this game since early days, so i'm an old-timer.
But don't expect me to be left behind. this old rat has some tricks up in his sleeve ;)