Really cool character! I wonder what set him on his wanderings. I like the colors you used, too. Gives him a a sort of rustic elegance I find very attractive. Certain shades of green and brown seem to work unusually well together. And maybe I'm just a sucker for poofy sleeves.
The whole idea of Pixiv fantasia makes me a little bit dizzy. The thought of so many people who don't even know eachother working together to create an entire fantasy world without any top-down administration... It's just fantastic. I'd love to see more projects like this. So many interesting characters and stories!