You can, here's how.
1.Open up the cheat box(ctrl+shift+c)
2. Type in boolprop testingcheatsenabled true
3.shift+click on the sim who's skin you want to cange
4.click spawn, more, click NPC and...
Just to let you know I've done this before and it works. From within bodyshop choose a skin then name the skin project then use a art program like photoshop or paint. Then edit in that program and...
First you have to ask your crew mate to join your tribe when you get to the second island. To do this you have to befriend them and ask them under special conversations. Then to play as your other...