Not being original? Using the footage from Forever, was a really bad choice. It brought the value down, in my opinion. Then with the Begins type opening. It resembled Wayne in the Begins trailer. And lastly, "truth, justice, and destiny" flashing across the screen was used in another Nightwing trailer.

After all of that, the costumes were great. Nightwing's was outstanding, probably one of the best I have seen.

One scene that could have used more work is the scene where the Joker is handed a gun. Maybe a view more close ups and don't reveal the Joker until he would raise his head out of the shadows pointing the gun. (Not sure if that would fit the story, if we know it's the Joker, but for trailer/teaser purposes it would have a better effect on the audience.) A close up of a man in the shadow and he points the hand gun at the camera. "I know exactly what to do!" He raises his head out of the shadow.

Towards the end I liked the use of different music and not something ripped out of Elfman's collection. To be honest, I didn't think that Elfman's score fit very well. If anything, the beginning should be silent and the images should intrigue us, and when we see Nightwing, then a "rock ballad" type song comes in when the action starts.

Good luck and keep up the good work. Message me if you have any questions I'd be glad to help.