Reaper

I like that it has torn look on its edges of its attire. Though, the thing that is most noticeable at this point is that the cloth doesn't seem to have any folds, or creases in it. It's alright if it is a one piece of long head-to-toe dress, but given in the pose, giving it some folds and creases, in the frontal abdomen, leg region would suit. I just noticed again the arms have them, which is good, but it doesn't look noticeable with the colours. If the black streaks part of shadows, I would say make the lighting more pronounced to show it more.
The skull seems to have some light directed on it, so if you give a bit more light on the cloth, it might give some depth to the dress and the image as a whole. Otherwise it might look flat.
Pose wise, it's good that it's not straight up pose, but gives the reaper a 'relaxed' pose. That is kind of ironic with his status as a reaper, but fits well, with some dark humor.