The Legend of Rivaille [Avatar]

Hello guys~
Lately I've been watching a lot Attack on Titan and Avatar.. what caused a big "creativity boom" inside my head
But as you can see it also made me drawing this fan art! Rivaille Heichou is pretty much the best character to me. His behavior has a "deepness" I miss in Eren's or Mikasa's personality.

Which element-Rivaille do you prefer? Personally I can't decide between the earthbending & waterbending Riv.
~AST

PS: I used some references for the typical bender poses (no copying tho)
PPS: I am aware that it isn't a clean drawing