Struggling w/ shading + the mirror

I wanted the shading to look more gross, intense, low-key and dramatic, especially on his face, but I can't seem to get it that way. I tried looking at refs as well but no matter how I do it, it seems to look weird.

I also am having trouble making the mirror look more, like, mirror-y. I also wanted to try and make it look cracked but I have no idea how to go about it as well.

any help would be appreciated, thanks 😼🙏