I colored in an image but the outline is still there...how to get rid of it?

[marigolden]

I drew an image with pencil, scanned that and then put it in gimp. Drew a path, deleted the background and space inside of the path and filled it with color. But somehow there are still remnants of the pencil at the edges. That didn't happen to a different image I drew and filled in though, not sure why. Anyway is there any way to get rid of the pencil remnants?