Ok then but I'll not tutor you on how to use some programs I'm lazy.
1. You'll need Biturn, Kimera (I use v0.91) and the download folder of Battle Apz Cloud in your desktop for easier access.
2. Open Biturn then convert "rtac" to FF7 Texture.
3. Then open the original field model in the PRP patch or NPC Rejuvenation patch in kimera so that you could resize it with a guide to resize to.
4. Click the head then click "add part to bone" then choose "rtao" in the Apz cloud battle folder then resize it which looks right to you and close to the size of the original.
5. Do the same for the body but choose the body part in the Apz cloud battle folder. For you to know the part you will add open another kimera then open "rtaa" in the apz cloud battle folder. If you need to add the body double click on the body then you will see the name of the file you need.
6. After you're done with all the parts start again with the head then click "show texture options. After that click add texture then remember the file you converted in Biturn?? Add that texture then do this with all the parts of the body.
7. When you're done with all the parts save it on a new folder and name it aaaa.hrc
8. You should already know about how to use lgptools right?? Do those and you're done.