For Details, go to my MCSM Model Swap Guides (Its Same as TWD S3)
http://steamproxy.net/sharedfiles/filedetails/?id=544036100

Getting ready to Model Swap:
Step 1) Download ttarch (www).mediafire.(com)/file/vblnbbd04jjivjf/ttarchext_update.zip
*Remove () to go to the link download
Step 2) Winrar and put it in a folder
Step 3) Find WD3_pc_WalkingDead301_data.ttarch2 in "C:\Program Files(x86)\Steam\SteamApps\common\The Walking Dead - A New Frontier (Season 3)\archives\WD3_pc_WalkingDead301_data.ttarch2"
Step 4) Put it in the folder you put ttarch in
Step 5) Open application cmd.
Step 6) Type "cd C:\Desktop\(Wherever you putWD3_pc_WalkingDead301_data.ttarch2 for me ModelSwap)\ttarch(or whatever you named the ttarch file)
Without my words: "cd C:\Desktop\ModelSwap\ttarch
Step 7) Type this in the cmd window "ttarchext.exe 61 (this is the file being extracted)"C:\Desktop\ModelSwap\WD3_pc_WalkingDead301_data.ttarch2" (mattering on where it is for you then without quotes) C:\Desktop\ModelSwap\Data (this is where you want the extracted files to be it may be different for you)
Without my explanations "ttarchext.exe 61 "C:\Desktop\ModelSwap\WD3_pc_WalkingDead301_data.ttarch2" C:\Desktop\ModelSwap\Data"

Now to model swap:
Step 1) Find the models you want to swap. For example you want Javier to look like Kenny
Step 2) If you want Javier to look like Kenny you find the sk61_kenny.prop and rename it sk61_javier.prop
Step 3) Put it in "C:\Program Files(x86)\Steam\SteamApps\common\The Walking Dead - A New Frontier (Season 3)\archives"
Step 4) Start The Walking Dead - A New Frontier (Season 3). The props should be swapped

Need Help, Comment on this guide, Thanks ^^