Nifty! Very well drawn and put together. The shading looks pretty cool too, and I really love the highlights and small bursts of fire throughout his torso and shoulders. There are a few things that stand out to me here, though. His front foot looks out of place- I feel like it should be angled a bit more downward. To see that much of the bottom of his foot would call for a larger step, perhaps more suitable for if he were running. The only other thing that I feel like could bring this piece to life a bit more would be more contrast. As I mentioned, you did really great with the shading, but I feel like some darker shading around certain areas, specifically the lower parts of the platform he's standing on, as well as the sides of the stalagmites opposite of the fire would go a long way.
I feel like a bit more darkness in certain spots could bring out the heat and energy of the fire in this image. I digress, as you've certainly created a pretty cool creature overall! His face and epic shoulder spikes make for a menacing being. Keep it up! :)