Definitely channeling a bit of Jolie in the nose and mouth but I wouldn't have really picked it until it was pointed out. :P
Your gallery (too nice to be called a dump) is great! Even your sketches turn out gorgeous!
I hope you get to post more often, I really enjoy watching the wips you post.
Hm if you still wanted CnC (though my cnc probably isn't too helpful =_=) on the doppleganger pic my main issue is with the legs. Perhaps some exaggeration in sizes between the feet/leg sizes will help define the pose as a lunge (This is the base of the pose that I can feel you're conveying ). Either that or hide more of the hind leg (almost all up to the lower calf) depending on how accurate you wanted his technique to be. At least it's something to keep in mind during the rendering process.
Other than that the upper body is looking good and I like the dramatic perspective. Good luck in the contest, drawing fighting has always been a bit too challenging for me!
Looking forward to the final work though