Portrait of a friend

Hello, I’ve been working on this for a few days now, and was looking for some feedback. I’m newer to 3D modeling, and have been dealing mostly with low poly stuff and and UV maps. Now I want to work more for photo-realism, and know this model can use a lot of work, I’m just not sure what. I like the first render better because I worked more on the lighting and camera angle than I did in the second one.