I did this piece after seeing Vegita powering up to fight Racoome.  He was just -so pissed off-, it was in-freakin-credible!  I just had to do a pic of a lizin warrior going into a battle bloodlust, face tensed with rage, fangs and gums showing, all muscles tight and ready to release their raw power.  The face was the most fun to do, as that's where the magnitude of the rage is shown, and to capture something as fierce looking as that is just wonderful.  I also messed around a bit with motion lines, to bring the focus to the face, as done in lots of manga and anime.
