A fairly plain room, but i have tried to add some interest by using lights and shaddows.

I've used transform tools (floor, railings) for the end of bridge . The butterfly with Gaussian blur and motion blur at low opacity. The rest is obvious.
Edit2: Butterfly shadow.
As I see it now.Light source is from the left and low, 4 o'clock direction.
Adjustments of position, size, tone, saturation and opacity.It is not easy.

Hi everyone hope you like my wooden couple scene. In general the techniques i used were the warp tool to match the doors,windows and texture perspectives.Played a lot with color balance and levels adjustement layers to match the colors and brightness of my different sources and finally used the liquify tool to make the chimneys. Hopefully i will find some time tommorow to upload a proper guide..
As for the sources i don't know if there is a 10 sources limitation but anyway here are the 2 missing sources

''http://www.sxc.hu/photo/1179255''

''http://fbrushes.com/2008/11/03/smoke-brushes-collection/''

The laptop image taken from http://www.sxc.hu/photo/1151738. Thanks to nezabarom!

I took the wooden pattern from the source image and blend it to the laptop by using some layer adjustment and some basic photoshop tools.
Hope you like it!