Dunno how it's done on mobile, but I disadvise you - at least for now.
In a new CC, you will find yourself alone and it might not be attractive, not even findable for prospective members - hard work I suppose. Be warned that there's a big invisible wall between mobile and PC players!
Me thinks you're better off to get some experience in an existing CC, learning the trade and getting acquainted to it.
In the PC/browser game, the button to create a CC should be on the "Country Clubs" page of the "Community" tab.