Actually the work is a solid 6, but it is really obvious you tried to shade it bejond your skills and tried to improve. If it would be smoother, it would score better. For your efford, I'm rating it a 7.
Its shadow grey up to space wolf grey so not sure why you say its blue, maybe your monitor colour is out. Admittantly the pictures have a little on the blue side of the spectrum but its not to bad. This look really blue to anyone else?
As a side 5.4 wow I do freehand patterns and get gaming standard, I want to see all there armys with freehand symbols everywhere cos it aint the common in my club.