Can someone direct me to a guide on how to add collision data to a model's bones?

Okay, so I'm trying to replace textures on yoshi and the textures loose their names after i frickin import and save them.
-_-

Thank you for your interest in my texure hacks!I have a tablet, if that makes any difference to you...

Heres a link to the page where all the hacks are, but there are seperate download links to every texture below:

emp.weebly.com/downloads.html]http://yo[censored]emp.weebly.com/downloads.html

P.S: Maybe in the future I shall take requests.




Anyways, heres the First Texture hack I have made, I call it Mu$stache Ca$h $tache.

I got the name off of Regular show, but otherwise its completely mine.


Heres the download link, its on my website, so its okay ^_^
emp.weebly.com/uploads/6/0/1/8/601801/mustache_cah_tache.pcs]http://yo[censored]emp.weebly.com/uploads/6/0/1/8/601801/mustache_cah_tache.pcs