Awesome composition. I love how it makes your eye move in a complete circle around the picture plane.
Do you lay out a complete perspective grid and then draw on top of that? What tools are you using for your perspective? I've seen some people use a string attached to a nail and special rulers attached to a rotating pivot.
i work out drawing and then find grid lines that suit the picture, this was done with a large ruler. some line in ruff didn't match and had to rework to fit. as you see in demon carving on top. still fixing to make it look normal