The background cloud smuding is good but I'm not digging the smudging on Marowak. The area just below Marowak's skull is a bit too sharp. Marowak's left (our right) arm looks a bit distorted imo. Color scheme could use work. Other than that 8/10.
It looks OK from my point of view. It is a little plain around the edges, but I like it overall. I like the cloudy effect given around the Marowak too. I'd give it a 8/10