HHK3-106
Len turned his shoulder slightly to avoid the squared off mug shot look. The shoulders form a nice symmetrical base for the head to sit upon.
There are no rules about this, just what feels best to you. Any one of these three poses could work for the proper subject and situation.
Canon EOS 5D Mark II, f/5.6 @ 97 mm, 1/160, ISO 200, No Flash
Aronsha Photographry 2011