DRAGON - Fight

I made this artwork as a commission with the Idea to show the fight between two dragons. I tried to design them individually to give them some character. One has seen a lot of wars , wears an armor for a warrior and uses the shields of defeated armies as something between a scale armor and medals. He wants to stop the bluish dragon - necromancer , who wears the bones of killed dragons, from conjuring an old demon that was imprisoned in the mountain. Good day for an epic dragonwar ;)