So, the method I chose to use for modelling the face was that of plane modeling. This requires starting with a plane and then extruding the edges to fit the topology desired.
When modeling this face, Polycount.com gave some great advice on what creates a bad and good plane model.
1)Eye Loops– allowing these to radiate on and on. This causes a lot of problems and is prevented by running a loop from the top of the nose across the top of the cheekbone up around the brow and down the nose again.
The loop. (polycount, 2009).
2)Polygon row– these should be a row that should run from the bottom outer corner of one eye to the other, passing under the nose.
Loop passing from the eye, under the nose. (polycount, 2009).
3)5 Pole Verts- these are used to change the direction of flow on the face, by having a vertex with more than 4 points connected to it. If these loops are not used, the mesh follows the risk of not following the flow of the rest of the face, making it pretty flat looking.
Positioning of these Poles. (polycount, 2009).
Positioning of the Poles. (polycount, 2009).
4) Flow of the Polygons– this flow should be fairly smooth and even, starting with a low polygon count, then adding more.
polycount. (2009). Face Topology [Breakdown Guide]. [online] Available at: http://polycount.com/discussion/80005/face-topology-breakdown-guide [Accessed 13 Apr. 2016].