Sorry about that. Here is what you do
1. Open the Lucario folder in the fighter folder. The path you take will be private-wii-app-RSBE-pf-fighter-Lucario
2.Delete all the files in the folder. If you want to keep the files as backup, copy and paste them somewhere where you won't forget them.
3.Put in FitLucarioMotionEtc.pac. Don't rename it
4. Put in Step 6. Rename it FitLucario.pac
5. Put in FitLucario00.pac and FitLucario00.pcs. Don't rename them. They will put the Mewtwo texture over the first color slot (the default color).
I will release a new step tonight, as well as a new FitMotion file. You might want to wait until then, because this one is a lot smoother.
To do this, you will need 2 programs, Project Smash Attacks (PSA) , and BrawlBox.
The PSA download is here:
http://www.smashboards.com/threads/psa-official-project-thread.244302/ (download version 0.2.1 because the latest version does not work properly)
The BrawlBox download is here:
http://www.smashboards.com/threads/brawlbox-v0-63d-bug-fixes.238861/
BrawlBox is where you will be editing textures and animations. To edit textures at a basic level, open the FitCharacter.pac, find the texture you want, export it as a .png, and edit it using a photo editing software like Gimp or Photoshop. There is a great tutorial here:
http://www.smashboards.com/threads/character-and-stage-editing-with-brawlbox.305039/
PSA is where you will be editing damage, character attributes, movesets, and more. PSA requires BrawlBox because you can't change animations using PSA. This program is b far the more complicated of the two, so here are my favorite two tutorials:
http://www.smashboards.com/threads/psa-simple-solutions-to-common-problems-collaboration.261537/
http://smashboards.com/threads/project-sa-q-a.242625/
and two databases:
http://forums.kc-mm.com/index.php?topic=1096.0;wap2
http://www.smashboards.com/threads/psa-animation-collaboration-needs-your-help.253384/
Please let me know if you have any questions!