Today I ordered the silicone and a new batch of plaster - things are hotting up!
Experimenting with the head - far left is made entirely of epoxy putty apart from the jaw and brow which are both plasticine. This was a method I was intending to use, but there seem to be too many problems such as painting the putty the same colour as plasticine, and the paint scratching off too easily. For now I'm going to continue with plasticine alone (centre and right)
Torso laid out ready to be cast