Portrait wiP

The current assignment in digital painting is to create a portrait of ourselves using the techniques previous discussed (as shown in Psiren). I'm using one of the pics of me in my white Aion wig for reference, so far I'm liking it. Already over two hours into this project. What do you think of it? Do you like the textures I'm creating? How much detail do you think I should put in the face, or should I leave it fairly mysterious?