@Lancer: Thanks. I suppose I can get accustomed to the coloured ones with some practice, but I’m not sure about all the others. For example, if you see in the screenie attached there’s one loop which goes around the eye, cuts itself and then head towards the back of the head (between the red and green loops). I’ve looked at a couple of meshes and that one is missing in them. Normally there’s a loop which flows down from the back of the head, the side of the nose and then downwards towards the neck.
Additionally, there’s one particular loop which is used to accentuate the muscle along the lower jaw and that’s not shown in this one. My problem is in visualising the flows along the head.
I suppose you are trying to say that as long as I can get the main loops, I should be able to go with the flow and model everything else. But as a noob to all kinds of art, let alone 3d, it’s difficult for me to grasp.