How do I replace a dead battery in my Audi A1?

My Audi A1's battery has died and I need to replace it. Can anyone provide step-by-step instructions on how to safely remove and replace the battery?

First, make sure your ignition is off and the keys are removed from the car. Then, locate the battery in the engine compartment. Carefully remove the negative terminal first, followed by the positive terminal. Next, loosen the hold down bracket and carefully lift the old battery out of the car. Place the new battery in its place and secure it with the hold down bracket. Finally, reattach the positive terminal followed by the negative terminal. Make sure all connections are secure, and start your car to test the new battery.