At first glance, I thought it looked kind of plain, but it has good form, kind of. Anyways, a good texture would work wonders for your model, it can give it the details you didn't add to the mesh, like a chest (no not that kind of chest), and muscle tone, and the detail to the back can be added too.


Edit: Oh by the way, don't use the details in my Jazzer X project picture as example, that face texture was just made in paint with no shading, I'm taking about textures with shading and all.