How to get in the town hall :D

So this is want you wanna do you wanna have ultra tackle and the normal all star shields. Go to the left back of the mansion and face the corner go as far up as you can now look down turn around and you will see where the brick goes from white to black put your crosshair in the crease of the black and white bricks and bring your crosshair up and spam rb until you can place a shield now turn to the red bricks and do the all star tackle it may take multiple tries but it'll be worth it. Also i didn't come up with this here is the video i found that showed me the glitch https://www.youtube.com/watch?v=daniwBPz-qk