I would agree that you DL is short, but not as short as everyone is saying. You have your anchor too far back and therefore your bow arm is more bent than it needs to be. Push you bow arm forward until the string is touching the TIP of your nose...thats where it should be, not far back like it currently is. I also think a shorter release head will help as well.

Get a pic with you aiming level and that will help us better understand your form.