@Setzer Gabbianithis is the correct place for requests, I moved your post here, that's why.
Had a go, it turned out a bit more colourful, but let me know what you think. It's been ages since I worked with anime characters.
Avatar size is bigger due to the forum changes. It will show up better on your profile this way. It auto-resizes when showing up on posts.
The set is great but the background colors is covering the pony tail and can't hardly see it on the avatar. Make the background on the whole right section completely black and remove the lighting on his face and chest area. I want to see the character hair and face to be completely visible and clean. Leave the rest as it is.
Making the right side black doesn't look good, so I won't be removing the colour completely, I'd not be happy with the piece myself. I've toned down the lighting. Black wouldn't show his hair at all. Avatars are smaller so it's a given it won't be as detailed. Here's the updated version!