Blue diamand : Kurodiam

Hi,
It's one of my best original characters named "Kurodiam" (drawn nearly 6 years ago).
Any suggestions on how to liven up the character are welcome. Also, any advice on anatomy is welcome. Red-lines are appreciated.

i would like it to be especialy about my skills in coloring as i'm not happy with it at all D: (and of course other mistakes if you find themXD).




By the way , a great thanks for JocelyneR jocelyner.deviantart.com/