Yeah I definitely got that breath of fire feel. Originally I thought it was a remake of that first boss you fight in the cave as a kid in BoF 2. That's probably really vague except to those who can remember it.
I agree with Adarias on the lines and the contrast. If you're going to go for a soft shading style then you should probably cater the outlines to it as well.
it's nice, amkes me think a little more of Breath of Fire style than PB, though it doesn't have the same contrast levels as either (your liens are very lin-y, you could have the shading aproach darks much faster if you wanted to be true to the original).
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It's been a while since I last played Phantom Brave, but I love that boss too, and it's very well-made I must say =)