Generally, you don't deduct for ordinary wear and tear. You do deduct for damage. You might also deduct specific amounts for cleaning specific items or areas. All this should be spelled out as clearly as possible in your lease, and your lease should follow local laws.
If there are areas where the tenant has damaged the paint, aside from normal nail holes, I deduct the cost of a fresh can of paint. I do the touch-up myself and don't charge for the labor. I do this no matter how long the tenant has lived in the rental. I take pictures of the damage and the repair.
By the way, I don't allow nail holes or screw holes or any kind of adhesive fixative on doors, interior or exterior. If they want to hang a wreath on the front door, they can use one of those over-the-door hangers.
On the subject of walls, I install curtain rods and require the tenants to use only those and not to install their own. They are not allowed to move or alter any shelving. They can use only stand-along shelving in the garage.