I actully have no idea what you want to do. Barn doors do not provide privacy but I need to see a floor plan to understand what you want to do. The dollhouse space is what? A play room or a bedroom?The wall next to the door in your bedroom ha to open somewhere so maybe move the rdresser and the desk to another spot or hang art above the desk I really do not understand the issue

It looks to me like you have a lot of wall space above the dresser and ab0ve the desk. How many photos do you want to hang, and how big are they?

You also have an enormous empty wall in the hallway leading to the bedroom (a great space for photos, IMO), and an even bigger wall in the room with the dollhouse.

A closet is not the right place to store wine.

Either have a temperature-controlled space for it, or admit you want to show off the wine you have. In that case, several wine display racks can be considered and they can be mounted directly to the wall.

I have a few questions...

What are the dimensions on the interior of the closet? width x depth x height

Are you willing to match the height of the adjoining door?

How many wine bottles will be stored?

Do you want to store anything other wine related items in the closet?