Simply stunning. I love the blueish tones on his hair and the way you drew the hand. Maybe it's not perfect, but the veins being visible through the skin give off an amazing vibe. Also the clouds are rather well drawn. But most of all - the way you use middle tones, make them a bit greenish - I think it looks fantastic. Could be that an overlay layer does it for you instead, but I think with your skill it's just a planned effect. A very, very inspiring picture. Thank you for sharing!