Although this is quite nice the way it is, I would do two things to increase the impact.
First, darken the small bright areas on the right and sharpen that area only adjusting the width so that the screen becomes faintly visible in the bright spot.
Then crop it to 4 x 5 thus emphasizing the lovely geometricity of the design in the construct.
I agree with Lew about the screen shadows, but not about the format. I think this needs to be more vertical to mirror the shape of the window. To me it looks awkward in 4x5. You could go with the original format or crop some on the right in Lew's edit (or not).
I'm with KenC on this - except I like the symmetry Lew's crop creates around the door window.
I think that one needs to determine which is more important - the window and the molding running to the corner, or the sunlight on the wall not being clipped at the bottom ....