We had a similarly sized Pottery Barn Kids bookcase that was in the shape of a house so we decided to to a little renovating!
I started by covering the shelves with contact paper for the flooring
Next hubby cut out the walls using some 1/4 plywood and attached
itty bitty molding to the top so we'd have a larger surface area to apply glue
Bailee gave each wall two coats of white paint and I used a Sharpie to decorate the walls and then it was time to install them. We flipped the bookcase upside down and glued the tops of the walls to the bottom of the shelves. Once that was dry I secured it further by running a bead of silicone on all the ceiling and floor seams.
The last step was applying windows to the back wall.
To do this I printed out a cloudy picture on sticky labels.
Her Grandparents sent her doll house furniture to go with it, I can't wait for her to open it tomorrow!