hdr at dusk

I shot this building for a client and they requested it be done at night. That to me means go just before the sun goes down and shoot until its dark out. There is a time when you can get that nice blue in the sky and still have it look like its at night. On this one i blended 9 images in photomatix and then played with the photo quite a bit. I cant really remember what i did as i was just playing. Now i want to photograph my son and his friends on their skateboards at night and strip then into the scene.