The profile itself looks fine, although I prefer your first version better. Cute design.
The biggest issue I see is color control. I counted 87 colors. A lot of them you couldn't tell apart. Also the selective outlining seems a bit odd in places as far as color choices and perceived light source. And where some of the darker outline colors are within the image itself, it feels like a lack of contrast overall, which makes it seem a bit flat.
There's nothing wrong with pastel-like colors like you have, but it seems somewhat washed out for some reason. Probably due to so many colors so close to each other.
And aside from some banding here and there, your pixel technique is pretty good. Some good clusters, etc.
Here's my take on this reduced to 10 colors: