The blob of hair is great, more his likeness. The only problems i see are his knee and upper leg(might just be the angle of the render), and his front foot is angled wierdly, it needs to be more flat on the ground or he wouldnt be able to support all that muscle standing like that. Overall its a great sculpture, looking forward to the end.
great model and very natural pose and gesture 
Excellent work on anatomy and pose and great resemblance to the actual person 
i like the arms and the shader! great job. i agree with aiman. you need to fix that foot. theres blob next to the knee that dosnt really go anywhere and the pelvic area looks to sharp. other than that it looks pretty accurate. keep posting!