I hate to be the only person to have something "nay" to say about this wall, but there's something important that's not quite right. Eyes are the things that people focus on first, and the left eye kinda bugs me: the bottom rounded corner of the eye, (as opposed to a more squared off corner, with different textures where the lower lash line dissapears behind the ridge of the nose,) is kinda losing the depth that's implied in the original scan.

Having said that I must reaffirm that every other single detail in this wall is beautiful, as many other posters have stated. You have a clear command over whatever editing software you use.