I have a lot of fun working with this project, I used blender for all the modeling and a few small textures like in the eyes or the stitches, Marvelous designer for the clothing and S.painter for texturing.
I don’t know who make the original concept art, if you know please let me know in the comments so I can update the info, thanks.
Attention to detail with the trousers imperfections for example, very good.
Love his look too!
Only thing I’d find to maybe improve upon would be the context in which the character is put in. The grey world is fine, and I understand its about the character and not his surroundings but as an artwork, I think this is the biggest area of possible improvement.