Great looking uro and set up.
As far as sexing goes, you can sex them the same way you can bearded dragons. Bending the tail up and looking for either two lumps, or one lump. The latter being indicative of a female.
I read about the head shape thing at first, and for years thought Calcifer was a guy based on it. Until one day I decided I'd lift.... her... tail. :mrgreen:
No wonder it took me so many years to get her tame! :lol:
-Brandon