I love this a lot, not only because he IS one of the best singers, but also you've pulled this off very well. The colors go very well with one another. I love the galaxy look. You can absolutely tell it is him. I like how you did use his famous pose. You didn't layer too much and made it look "dirty" so, good job on that. I do wish that there was a bit more outline around him (especially the clothing) just to see where things the difference from the highlights and the sides. If that makes since.. All in all, it's very clean and perfectly simple.