I find the red dress more interesting, yet the title implies the wedding dress is the main focus. :) Perhaps a different angle or choose just one of the dress windows. I first see the doorway, then the dresses. 5
The lighting plays on the items in a nice way, but the whole image seems a bit soft to me, and there is a visible tilt. I think a closer shot showing the light playing off that wedding dress would be visually interesting. Sorry to sound harsh, but I do see some nice potential here that you were trying to capture.
I think this would have been more successful if you'd focused on just one of the dresses. Placing the doorway in the middle of the composition doesn't work for me.