What are the correct steps to clean the blinds?

Remove dust with a soft cloth  ,  fleece or a feather duster  .

Design a special sponge that  can be attached to the parts of the shutter from both above and below.  You can then  moisten it in a solution of hot water, vinegar  and  dish soap for a perfect cleaning afterwards.

Dry with a three-layer sponge

Nothing replaces preventive measures

It is very important  to thoroughly clean the shutters once a month or even every 15 days.  And if you have a wooden shutter, all you need to do is dust it with a brush and then use a special wood product to give the wood more shine.