I'm going to be mean- yes, you really need to re-extract the image. You'll be happy to know Rikimaru went ahead and clone-brushed those ugly lines out of Chikage- the cleaned scan is at Sister Princess Girls by Rikimaru-jp I'll confess I have no graphical skills whatsoever, but he might vector Chikage out for you if you asked him real nice. Also, the moon's rather too large, you should probably shrink it some and maybe make it brighter.
I do like Chikage's wings though!
:pacman: