You pull off monochrome quite nicely. I love the look on his face. It's like "come near me, just try it". Oh and I like the wispy black on the right of the picture.
This is real eye catching piece. I love the detail you put into his eyes, as many artists seem to ignore that part of the human anatomy. The blade and his hand are lovely~ I do think his nose is a bit too small for his face. You did a really nice job on this, however and I hope to see more like it