Styles are vague, do not compromise readability because of 'style', not even SOTN did that.
Alucard has his cool guy pose because it expresses his character. Raziel is FALLEN and TORN, so he stands much more hunched and non-proud than Alucard. Wider pose, I guess. Reference first-guy for pose I'd say!
Also please more definition on his legs. Alucard's legs look like straight cylinders because he's wearing trousers and boots.
Making Raziel's legs look like pants does not really make the style SOTN so drop some of those breaking-style-fears and define, define, define!11
Raziel is not a normal human, his physiology is like a skeleton with some rudimentary muscles and some blue paint all over that. Thus there is a lot of difference between the wideness of joints and limbs.
All of this should be visible in the finished sprite, but isn't, so congratulations, you can now make your sprite more better!
If I sound like an ass please just imagine this post with a happy tone! I'm desperate to go to bed so I'm just splurting out the last critique I've got in the system!
Also Good luck and never give up!11
Oh plus, shading-wise you're close to the original 'style' and stuff so you're obviously on the right track, and it's obvious that you've got some good pixel skills, so don't doubt that yourself, and don't doubt that I think so either for even a second! <3
Yes. That's it, good night!