Warrior of the Cross - Concept Art Project

Hey there, This is a project for a great friend of mine. We intend to do a cover for a Christian Metal Album, and he describes me what he wants on the drawning, and here the result is.
I normally make colorizing above traditional art, but in this case I preffer to do this one hundred percent digital, and I can say the final art surprises me so much! I really love this different king of colorization (and I want to use it more times).
Anyway, if you, visitor, have some opinion about this, be at home to comment whatever you think. I'm counting on you to improve my art!