before the course begins, I finish eye modeling and UV making. This time to learn to add joints for control the head, and use that makes head up and down, and open the mouse.
And opening the mouth requires the use of the full weight tool. But this is only the simplest initial use with the shape editor can be recorded, we use the sculpting tool to leave marks on the face, such as closing or opening the eyes machine.
The combination of the shape editor and the weights makes it possible to manipulate the opening of the mouth as well. rig is also an indispensable part of the process, and because of it the raising of the head when opening the mouth becomes very natural.