One thing I liked a lot is the folds of the fabrics. It is done with some skill. I have very little skill with fabrics (I sucked!).
Well, forgive my very bad mouth (or hand) but I'm just about to say some very harsh things!
>There are some contradictory perspective clue in the legs. The left one we can see is clearly seen front on (like you are about three inches tall or so). However the raised right one indicates that the legs are viewed from a higher angle. Perspective can be a devil. I would advice you to have a model pose for you or you could even take a picture of yourself in the pose to see how it should look like... and hey it is not cheating. Leonardo and Micheal uses models for their works, why can't us?
>I think you make a mistake with layering the sword over the hand. It should not look like that.
>It also seems you are weak when it came to lighting. There is a strong light that comes from the flames but it illumates the character almost uniformly. I think you need references. Try looking in a mirror in a dark room while holding a candle, it would give you an idea of how such lighting situation should look like (essentially lots of parts will be in shadow and dramatic areas of light and dark). I made a render to see how it looks like:
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