She looks pissed off and not near cocky/smug enough ;3 One of the many to come facial expressions I assume?
RD idk she should totally have longer hair in the back and shorter in the front, try and pull off the show hair a bit more for her. Well try checking out a few other Human RD pics and check out her cute hair style in that Gala episode. She can be pretty sporting but does have a girly side too. RD ALWAYS dresses in-*shot*
Very good. The eyes are very soulful. Her neck looks a bit worrisome, because it leads into the face a bit much, but that might be intentional. Her shoulders also seem unnaturally small. Other than that, it looks very good!