Dear Alex and Ellen:
Given the scale of the project I figured it would be easier to understand with an Isometric view of the study where heights, widths and a selection of materials could be incorporated.
I thought that a bay window could work as a perfect element to incorporate the study to the living room giving you guys the option to read more comfortably while looking outside. This element is incorporated to the built in desk and bookcase. The lower volume has an Oak veneer finish and works as a desk, which is sized to have a computer and enough space to work on something on the side. It also has a bay window seat with drawers for storage, all within the same finish. The upper volume works as an open bookcase where you can store books, pictures and other. It has a white laquer finish. I tried to work with both wood and white laquer finishes, since I noticed you liked the combination in many of the pictures you shared with us.
I hope that you like it and that it works accordingly
Eugenia Perez E.