After getting everything separated, you can assess the space situation
. There is often wasted space in the front corners of the closet and at the top of the closet. Don't be afraid to store long-term things up near the ceiling. Is there room for shelves on either side of the closet? You can put more in there than you think. If a good organizer still doesn't give you enough room, consider space saving hangers, like velvet hangers, to get the job done. These can cascade from each other and hold specialty clothing so that you can save up to three times the space in your closet.