I finally got this figured out, but I don't know where I'm supposed to put the .narc files. I can't find any folder named poketool. It looks like the changes were made, though, so... will anything terrible happen?
EDIT: I'm noticing black spots on the overworld
EDIT: The sprites for the starter pokemon haven't been changed even though the names have, when selecting your starter. AND your partner still has one of the original starters. For continuity's sake you may want to change that

I didn't see anything else out of the ordinary for the beginning part, though you may want to edit spheal's moveslot, as powder snow made the rival battle trivial