My only real complaint is the inking. It's really jaggedy and messes up the coloring. You should check out some tutorials on inking and coloring. Use masks to eliminate the white, resizing and editing to make the ink smooth, and color on layers behind it so it looks more professional.
Aside from that, I like it. :) Rei was my favorite Breath of Fire III character. And it totally sucked what happened to Teepo. :(