1. It could use a bit more color.
2. Nice job on the light bit of the armor
3. I personally think you should've left the kat like it was.
The Lack of color was really on purpose, dindt want more then 2 colors in it (blue and a bit red)
And i tried to leave the kat like it was xD, but it would be really boring for the right bottem corner so it turned out like this lol