What is opposite your desk? I think that's the only wall we haven't seen. it must be the one below in the ceiling fan photo. With the style of your windows and color of the trim, I think I'd do the walls with a specialty treatment to get the Old World plaster warmth going. You may find a wallpaper that replicates that look, if you like the look an prefer paper. The photos would tell me to turn the desk to float, centered on the window so you can look out. Your chair would face the window with your back to the bookcases, although I might move those to the wall we haven't seen. You have one full bookcase and one mostly empty. Bring in some decor items and style them with 1/3 books, 1/3 decor and 1/3 open space.

Triple post.

Roofing style and exterior style suggestions and pictures

Hi Nikita, First and farmost, you have very beautifull coushion on sofa, from where you buy it? You can check the videos of Small budget Big makover first session series in youtube. In One such house in Gujarat, Muninder and Bishakha coloured the old sofa set with whtie (The sofa is like yours) and changed the centre table. Interestingly, the family also had your kind of sofa set and they also want some modern style. The architect duo did not changed the sofa, just changed the colour. Yes I found it in youtube. it is the house of Setu Upadhyay. the link is https://www.youtube.com/watch?v=85GNhyLeVnM Another suggestion is that you have many tables on the room. You can drop few chairs and opt for a single centre table