Even though Kanu has been baked there are certain parts which still need to be sculpted and altered and one of them is the face/beard, i could have tried to add the beard before baking but as i prefer to handle the sculpt rather than fix it to a base it wasnt practical and when i'm sculpting i tend to think about the manufacture side and perhaps i will want to make a mould and produce a few copies.
Another way its useful to work with hard and soft clay is that if you machine away part of the face, which wasnt going to be kept anyway (st2.10 & st2.11), then press the soft clay into that area you get a near perfect fit when the soft part has also been baked.