This is awesome... and it severely reminds me of an emperor titan from warhammer 40k, though extensively modified, and the quote below kind of goes along with it.
The Ground trembled every other heart beat … the sound echoed louder with each beat, and haunted my soul as if doom was approaching … and then I saw it towering in the sky, still miles away. The fear and awe I felt was indescribable. I can only image the sheer terror our enemy felt when they beheld the sight of the Emperor Titan. -Extract from Memoirs of Precept Catotus, Griffins Titan Legion ([link])
The sight of the titan glancing upon the land under its vast gaze, really ads on to the sense of scale of the overall design composition. There's a great view of detailing on the machine's form as well as the use of ambient and dynamic lighting that really accentuates the composition's quality. Great job.