Here's what I mean about the very loose collar...
Not so much on real Joker...
And the collar tabs still look a little long to me, but spreading them outward would certainly solve the problem.
![loose collar.jpg loose collar.jpg](https://cdn.imagearchive.com/sideshowcollectors/data/attach/486/486973-loose-collar.jpg)
Not so much on real Joker...
![55ce42cddd089509798b45f3.jpg 55ce42cddd089509798b45f3.jpg](https://cdn.imagearchive.com/sideshowcollectors/data/attach/486/486975-55ce42cddd089509798b45f3.jpg)
![heath-ledger-joker.jpg heath-ledger-joker.jpg](https://cdn.imagearchive.com/sideshowcollectors/data/attach/486/486978-heath-ledger-joker.jpg)
And the collar tabs still look a little long to me, but spreading them outward would certainly solve the problem.