Here is a sig i made a year ago and maybe will come to help for someone
Start with a wallpaper.
Cope that layer (ctrl+j).
Smudge it and ye use the settings and brush if u want (you could also erase some over the manor w/e you got in your wallpaper).
Put to c4d renders change layer settings from normal to screen and use the rubber to and erase some.
Make a new (ctrl+shift+n) layer apply image (image/aplply image).
Go filter/blur/Guassian blur take around for and make the layer setting to
ligthten and play with the opacity (you could also erase some over the manor w/e you got in your wallpaper).
Make new layer (ctrl+shift+n) go apply image (image/aplply image) then go
filter/sharpen/sharpen then go edit/fade sharpen and take around 30%.
And if you think its to brigth go Layer/New addjustment layer/Brigthnes/Constrast and pull the brightness meter down a bit .
here is the tut w/o explanations :
here is the c4d i used : http://img71.imageshack.us/img71/914...render3ry8.jpg
dont like my outcome in the tut so here is another outcomes :
and yeah everything is made by me so dont copie and paste around only posted here and at my deviantart.
+ rep me if you like it or for my hard work :P