Need help from a sprite artist

I must say that it would be feasible using YY-CHR image editor... opening "All graphics" file from graphics of SMW rom(this should be valid only for SMW)
Then someone with some decent skill in snes graphics should be able to replace mario sprites with the one of peach (man it would be hilarious to see mario pop up from Bowser's flying vehicle shouting HELP ME! )
Still it should have to be made fit with the size of mario and vice-versa...

Unfortunately i'm not that guy, still i knew that Zeemis was skilled with YY-CHR
I mean, is it really possible that there's no one else in this site able to use that program? It should be the same used for making custom weapons as ff6 hack, like some i've seen in some thread of this site...


PS. i found this one in SMW central:
http://www.smwcentral.net/?p=section&a=details&id=994
If i read correctly it should be a huge step in archieving your goal, it would be necessary to copy-paste those graphics in the all graphics file of the game and follow some little guide...