Hey Magdalena, the final bronze image looks great! The off white shader looks good too, hmm I might have to try it out for my own studies. Minor crit on the anatomy, the trapezius from the back view looks a bit sunk in, or deflated in certain areas. Since the right arm is raised, wouldn’t the back of the right deltoid be compressed making it bulge out more? It also looks like the scapula is missing, I think that even a hint at the spine of the scapula would add a lot.
I know you said you were done with him, he looks good as is. So unless what I said really bugs you, I’d say leave it. 
When are you going to show us the next bust?