I have collected rips of all the different canon courtrooms that aren't already in the AAO editor. They're sized correctly, so all you need to do is upload them.
All sets contain background and foregrounds for the defense, prosecution, witness, judge, and aide benches. They all contain lobby backgrounds, except for the Great Witch Court set. 3DS court, Courtroom no. 4, Khura'in Court, and English court all have overview backgrounds.
Do not hotlink. Please download and re-upload them.
Credit goes to No Comment and AceJakkid Fan.
Bonus! Credit goes to SuperAj3