It was okay, the pace could have been a bit faster for a trailer, more action. Some shots could have been taken out, for example the girl sitting at the desk ? ? ?

I don't like that you used Batman Begins music, use something else, because everybody and there grandmother uses that and it really lacks originality. Granted it's cool music and fits your trailer, personally I would have gone with something different.

You had some pretty cool shots of The Joker and Batman spinning around with his cape.

The Costumes & Makeup seem right on

Your on your way to what has alot of potential in being a great film, best of luck the rest of the way