Impressive technicality dude! The shading and texturing is on point! There is some parts ( like the upper left Bicep) where the anatomy seems a bit off. The triceps/biceps on the left arm are bigger than the shoulder while its isn't on the other side. I also suggest using darker tones to create greater contrast. The torso kinda blends with left arm so greater contrast could make the parts easily discernible at a glance. All in all tho, Great stuff! I'd love to see what else you could do with your technicality!