Megaman X, thats very cool!
Observing your image, the rendered level is very good. The main thing that stands out to me is the anatomy. The I find my eye focusing on the legs, the hand, the buster cannon, the shoulder, the torso and the hips. The shapes and proportions of those areas could be readjusted. Also, the background and the fire look like photographs. Perhaps think about painting over those areas to keep that from standing out, which should give the entire image a more complete look.
Those would be my observations. Overall it looks cool. Keep up the good work!