I think you can start by de cluttering. There's too much going on. If you want to keep the bedspread, I would pull some colors from that. :) Teals, browns, whites. It would make a pretty room.

Consider Grey or white. U could also use geometric or any pattern in mint green

Hi Tanmayi, Going for white walls is always safe, this will helps in giving a light feel to the room plus gives a lot of scope to bring in the patters and colours to the room in other forms (like curtains, cushions, wall art/frames, etc) PAINT SHADE(2 Options) Would also like to advice you to have a subtle wallpaper either in the niche portion of the TV wall or for the entire headboard wall. (Assuming the other walls may have windows or doors) SOME WALLPAPER REFERENCE IMAGES: Later you can gradually bring in other elements as per your taste and time and pull up the room together. Hope this helps! Best Regards, CUBS Team!

If you are ok with one side of the bed against the wall you could push it to the left which would free up your window. You could have a head side table with a slit so that the wires attached to the socket underneath could be used on that table. Since the green wall looks good to me, I'm assuming your wish to change from includes all painted walls. I would suggest an exposed brick wall. Since the original is not possible, you could go with rectangular terracotta tiles which emulate bricks.