An excellent scene and very well executed too. The windows are perfect, and I can just imagine the sun streaming through like in the movie. I really love the parts use for the bed, it reminded me of when I was about 8 years old my brothers sister and I would always make hospitals with our LEGO, and would use that exact piece for the bed-end rails (Not so technically done mind you). But I had forgotten. So thank you for reminding me, it looks great.
Also your photography is excellent. Bright clear and focused. There is nothing worse than someone showing off half their hideously messy house behind their MOC. Really well done.
The only thing I would mention is to have a pillow under Hermione's right leg like in the movie, to make her look even more awkward and statue like. Maybe a 1x2 or a 2x2 white tile would work. But that is just my opinion.