Below is a sketch of my current office room layout. The desk and the bookshelves can be moved.
According to the article "Where to Put Your Desk" on What's Best Next, it is generally best to see the door from your desk. This is difficult to do in my office, since the window will be at the back and reflection will be a problem.
The article "What If My Desk Is Facing A Wall?" on Open Spaces Feng Shui suggests not to put the desk facing a wall.
Is there a better arrangement that can follow the above principles?