Seasonal storage of clothing not only keeps infrequently worn items out of the way, it prevents damage to things that will not be used for months. And, depending on your local climate, now through May is the time to turn over your wardrobe, putting away (in the Northern hemisphere) heavy tweeds and flannels and taking out linen and tropical weight clothing.
I use a separate closet for seasonal storage but any storage space needs to be cool, dry and airy so it does not develop mildew or odors that spread to everything that is stored there. Getting odors out of clothes can be a nightmare - dry cleaning does not help - so don’t let them get started. Storage areas should be aired out, vacuumed and wiped down at least once a year.
Clothing that is going to be stored should be also be clean, meaning it needs to be washed or dry cleaned before it is put away. Moths and pests of all sorts are attracted to dirt on clothes and in the process of eating the dirt will damage the fibers. This is also a good time to have minor repairs done, while you still remember what is required.
Dust mites can also live in clothes and each month of storage increases the population of mites and allergens significantly. Air out even freshly dry cleaned clothes for a couple of hours before putting them away. Empty pockets before hanging garments up to preserve their shape, button the buttons and zip the zippers. Suits and jackets should be hung on wide, shaped hangers to preserve their shape, and then placed in muslin or canvas bags. Plastic bags are undesirable as they can trap moisture inside and impart a musty smell.
My own process of wardrobe rotation is done two or three items at a time over the course of a couple of months. I start by putting away my heaviest things and taking out regular weight clothes in warm weather colors, like tan gabardine. This weekend begins the task.