That looks good. Only thing I can see is that it looks like there should be a light source for the light on our left side of his face. Or I could just be seeing it wrong. Either way, good collab.
I thought that as well at first but I realised that in the actual stock, there is a lamp there (I think).
I would so buy the tutorial if ya made bro if ya need a tutorial made i can help but i like it alot it looks very ----- keep it up