All the pictures are my own and I listed them under the SBS

His pectoral chest muscles are a bit odd. The breast on the RH side is somewhat larger and misshapen when compared to the one on the LH side.

The anatomy of his arms is perfect, that's why I don't get how come his chest muscles are asymmetrical, his right pectoral being smaller than his left.
It's almost like the torso was semi profile, like this picture of me :http://cdn.picapp.com/ftp/Images/0066/0f6f596f-f177-487d-ac53-d2c8b5f5e1c4.jpg and you tried to warp it for a front.

The light on him comes from the front while the sun in setting in the back, etc, etc..
Dude, there are too many mistakes to point them out here, without discouraging you ( i will if you insist) - so i suggest you try something simpler first:
for example, making a man with that statue's head, by using stock and blending. If you succeed you add a simple background first, then some additional element and so on.

thank you ..I have no problem with your critique, it is the way I can learn. I will get better.