heyas; 3 or 4 block segment lengths are good for non-curved joints. for curve joints, they should be like twice as long. (well, depending on how wide your 'blocks' are.) and definitely, the jaw should not be curved, but you can still try it with the neck bits, if you want. make sure the buffer zone in the head, between the jaw and neck, is wide enough for the jaw to have room to work, also. and you're welcome, and i'm glad she likes the norn :)