Had a lot of help doing this one from a photoshop learn it now cd that i had free with novembers mags . the video was done by Chris Robinson so credit to him too.
Heres the picture :
Things I did :
Made new layer removed the sky. Desat the rest of the buildings . added the moon. Burnt the buildings to look abit darker. added the clouds . High lighted some of the windows and parts of the buildings to look like the moon was hitting it . added abit of mixed yellow to look like some of the candles and lights where on .