I can use show not tell sentences, by Olivia

The day started perfectly. Wizards and elves entered the building and talked to their friends. People washed the cars, checked the sirens and checked the diesel limits. There was a man called Dumbledore who always had a smile on his face every day. Just then a strange man approached the station. Dumbledore’s smile wiped off his face and turned into a suspicious look. He narrowed his eyes to this apprehensive man. Dumbledore was at the other side of the cavernous station…

Can you find my show not tell sentences?