Hi Steve. For me, the most striking part of this image is the wonderful red light. The pose and comp are also very nice. It looks like he's fully awake and ready to get up and go. You might try lightening up the shaded side of the calf a bit to see if that is an improvement. Well done.
Some Shadow/Highlight work will open up the shadow side. I might also suggest a lower perspective would have moved the horizon line out from the underside of the belly. Great red light as mentioned.