We will start with the head, but you have to be careful what you remove. The face is usually created in such a way that it needs extra geometry so it can animate successfully. The mouth and eyes, for example, have a few edge loops around them that we could happily reduce, but these may be needed to enable better lip syncing and facial expressions.
If you’re not sure, the best thing to do would be to ask an animator.
So, Figure 10.11 shows our current head. We will reduce the mouth area first.
The edge ring highlighted in Figure 10.12, running across the top of the mouth and down the beard, ...