The lighting is too bright and the shadows are too sharp. If you're trying to get the effect of the light coming from the background image, you need to 1. lower the intensity a bit. Way too bright. 2. Color it. There's pinks, purpl;es and blues back there. Use them.
::cheers::
Dave Baer
Professor of Digital Arts
Digital Media Arts College
Boca Raton, Florida
dbaer@dmac.edu