[gadzooks]

Very nice image. My only suggestion is to maybe tone down the image outside the window. Its a nice image but my eye is drawn to the outside rather than the rendering inside. Gadzooks

[Micha]

Looks good.

Some hints: I would try to use a bump for the ground and I would change the outdoor image. If you look outside, the landscape is very bright and the brightest areas (heaven ... ) are burned out. Also, shadows far away are not black, more grey from the dust in the air.
Interesting composite exercise. I play with your image in PS a little, but it is to difficult to explain, my PS is german. Here a screenshot. After the modification like in the screenshot I have played with the gradiation curve (Ctrl-M) and give more brightness. Interesting game.

The DOF effect of the camera should give a blur to the background, but you fake it and the background looks very sharp. You could add a blur in PS (for example gaussian 0.3). So the eyes will not catch so much.



Here I make the room darker too. I feel, now it looks more real, inside and outside are in contrast.



But I don't want to forget, you use an emitter as background. Than, I would try to change the intensity and ... of the mxi map.

[Micha]

... I think, the frame of the door is a little bit to small. I feel, I'm not sure there is a door or not. There is a big glass and this need a strong frame.

Also you could build a hand grip on the door and I would open the door a little. Could be a nice effect. If you give the glass a little absorbance or color, the open door effect could be more nice.

I see strange black edges on the wall, do you need it?

I think about the lighting. The light from behind the camera make the image flat. I would try to move the light to the right behind the camera. Or make a wall behind the right camera side, so that the chairs dosn't look so extrem flat and light come only from the left behind the camera. But than, the room let me feel not so good. The Chi is flowing through to much.