I really like the setting you have made for this. Especially the light coming through the curtains.. looks great.. can't wait to see more renders! The Movement of the curtains frozen like a photograph is cool. My only crit is maybe the table surface is too reflective. I think the setting of this is going to make it look highly realistic once your done with textures.
Keep up the good work man!
oh another thought.. maybe motion blur on the curtains? like a gust of wind hit just as the photograph was taken. Just an idea..