I love the loosness of the lineart pieces also the linearts with those subtle shades. The colored pieces are coming along nicely as well. Your color choices look a bit arbitrary sometimes but I guess some more practice and this issue will be solved. Coloring is a great enemy of mine too - now I think it's not a good idea to assign separate base colors to every elements of a picture (i.e. skin, cloth, shoulderpad, etc.) Rather you should try to use every colors of the image all around - just in a different mixture, putting emphasis on different color on different elements to make the whole color scheme come together (Just an idea I also have to try ). Using adjustment layers to finetune color scheme can also be a good idea.
Anyway, keep up the good work, man!