In my opinion, only the edges between the brow-ridge down to the nose, and the edges that "fall off" the nose onto the cheek regions need touching up.

Try using the Sculpy Geometry tool (Modeling Menu Set, Edit Polygons -> Sculpt Geometry Tool -> Options). Mess around with that tool, it's not complex to figure out. Try using it to smooth out the afore-mentioned edges.

Otherwise, I think it's coming along nicely; I'm getting that Dobby, from the Harry Potter book, feel ^_^