Honestly, I thought this was pretty bad. The stars I gave were for the costumes, which are great, but the story and dialogue was.... simple.

The Joker was a copy of Heath Ledger's, and of course wasn't as good, because I don't think anyone can represent that interpretation like he could.

But you decided to go down that direction as far as look and mannerisms (which were done well), but barely scratched the surface as far as the depth of character he brought to the table.

He doesn't like Arkham because it has rules, and gets depressed when Batman sends him there? :-/

The Joker loves Harley Quinn because she writes him letters? It seemed to be implied that Harley loved him as well, but then why in the world was she so terrified and angry with him in the video?

And the transition from law abiding citizen to maniac's companion seemed far too casual and easy a decision to make on her part.

Good effort, but it left a lot to be desired...