closet space setup help

okay so i have two sliding doors that go to one closet that overlap meaning you slide the door on the left to the right and it over laps the one on the right and visa versa,

the problem is i cant see how i will be able to seperate the closet in two while ensure no light will escape into the room or into the divided rooms in the closet itself. i wish i could take pics but my camera is broken

Prop a 2x4 up behind the doors and staple some sort of thick cloth or blanket up to separate the areas.