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How to organize deep closet shelves 
Take everything out of the closet before reorganizing. 
Unpack the closet contents onto nearby counters or a section of the floor. Once everything has been pulled out of the closet, you can begin to plan what types of item you'd like to put on each closet shelf.
Reorganizing deep closet shelves while they're still full of items would be a difficult task. Re-organize seasonally to put less-used items farther back in the closet.