I'm giving you a good rating Thewar, because this is definitely one of your best colorings, if not the best. Some background work, would of helped a lot, but what you did, looks pretty good, and people have taken notice. I think, the colors look very nice, and the coloring itself, is clean.
Like Lee_nus suggested, I think you should try to take it to the next level. Exactly how he explained it to you, was perfect. Your colorings, have been on the same level for a while now. It's time for you to try new things, raise your standards, and color with more confidence. Don't forget the things Lee_nus suggested to. If I were you, I'd even write down these things, so the next time you color, you'll be able to easily recall the things you want to try to do.