First I cropped off some sky to get more off-centre composition. Darkeded a little to show tones better. Adjusted colour balance to less blue. Finally a little bit of sharpening with unsharp mask and added narrow white frame.
Poster on the staircase. I shot this from an angle to set that reflection off centre. I then corrected perspective as well as I could. The reflection comes from the window, I didn't use flash.
Worked on the top part only.
Pushed up the green and red channels so that brightest parts of the clouds became white.
Decreased intensity of blue channel with mix of 80% blue, 10% red, 10% green.
Levelled the horizon by rotating counter clockwise. Colour balance looked a bit on the magenta side. Adjusted shadows towards cyan and highlights towards yellow. Cropped a little from bottom and left to get less central composition.
I hope you like it.
![Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2739 W: 58 N: 2371]](http://i1.trekearth.com/misc/g-g-g.gif){kind=small}
![Gold Star Critiquer/Gold Note Writer [C: 425 W: 0 N: 640]](http://i1.trekearth.com/misc/g-n-g.gif){kind=small}
![Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 195 W: 24 N: 107]](http://i1.trekearth.com/misc/g-s-g.gif){kind=small}
