Your digital paintings always look so awesome to me, who lacks the ability to work like you do with digital paintings. I envy the way you shade and highlight. Even as a speedpaint, this looks really good. I suppose the only critique I can really find is that the lightsource appears to be coming from the right side of the page, but the shine in his eyes appears to be coming from a lightsource to the left that none of the other shadows and highlights support.
But really, that's being a bit nitpicky isn't it? I really like how this turned out it makes me want to practice with digital painting now.
I'm so horribly out of practice with digital, I keep realizing stuff I should have done. I'm really not surprised I lost my light sources 8D;; ONE DAY I WILL LEARN... maybe. Thank you for pointing it out~ <3